{"title":"Automatic Door Batteries","description":"\u003cp data-start=\"1062\" data-end=\"1242\"\u003eAutomatic doors need to work every time someone approaches them. This collection of batteries is designed to keep those systems running smoothly, even when the main power goes out.\u003c\/p\u003e\n\u003cp data-start=\"1244\" data-end=\"1455\"\u003eThese batteries act as a backup source, making sure doors open and close without delay. They’re built for long, steady use rather than short bursts of power, which is exactly what automatic door systems require.\u003c\/p\u003e\n\u003cp data-start=\"1457\" data-end=\"1685\"\u003eCommonly used in offices, hospitals, retail stores, and commercial buildings, they help maintain safe and convenient entry at all times. A reliable battery helps avoid downtime and keeps foot traffic moving without interruption.\u003c\/p\u003e\n\u003cp data-start=\"1687\" data-end=\"1757\"\u003eExplore the range and keep your door systems dependable day and night.\u003c\/p\u003e","products":[{"product_id":"autoslide-multidrive-replacement-battery-216v-3400mah-li-ion","title":"Autoslide MultiDrive 21.6V Replacement Battery AS0114LBB","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAutoslide MultiDrive Series — 21.6V Li-ion Replacement Battery (AS0114LBB)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 21.6V 3400mAh Li-ion battery replaces part AS0114LBB in Autoslide MultiDrive and MultiDrive Sliding automatic door operators. It powers both the control electronics and drive motor during mains failure, keeping the door operational for emergency egress and accessibility compliance. Voltage and capacity match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultiDrive and MultiDrive Sliding compatibility:\u003c\/strong\u003e\n    Both variants run the same 21.6V battery rail and share the AS0114LBB connector and BMS handshake. One battery covers the full range without any modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through full mains-fail simulations on the MultiDrive controller. The BMS held stable voltage across repeated open-close cycles and did not trigger an early low-voltage cutoff under motor-start load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail verification:\u003c\/strong\u003e\n    After fitting, manually trigger a mains-fail test during a low-traffic period. Automatic door backup batteries must complete a full door cycle under real motor load — a resting voltage check alone will not confirm the battery is serviceable.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on the MultiDrive\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MultiDrive backup circuit only engages when the battery holds sufficient charge for the controller to confirm it can complete at least one full cycle. If the battery has sat unused for an extended period, self-discharge can drop cell voltage below the controller's activation threshold — even if the battery was healthy when last tested. The backup relay will not close, and the door behaves as if no battery is fitted. Charge the replacement battery for a full 24 hours before testing, then run a manual mains-fail cycle to confirm activation.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMultiDrive controller losing door programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MultiDrive stores door travel limits, speed profiles, and sensor calibration in volatile memory backed by this battery. When the battery depletes fully, that memory loses power — even briefly — and the controller resets to factory defaults on the next mains restore. The door may then fail to complete its open or close stroke because travel limits are gone. After fitting a charged replacement, re-run the auto-setup or manual limit-programming sequence before returning the door to service.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315051167834,"sku":"BWCS-ATS114BX-1","price":110.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315051200602,"sku":"BWCS-ATS114BX-2","price":127.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315051233370,"sku":"BWCS-ATS114BX-3","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ATS114BX_1.webp?v=1777949402"},{"product_id":"geze-ecconodrive-el-replacement-battery-144v-1500mah-ni-mh","title":"GEZE Econodrive EL 14.4V Replacement Battery 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGEZE Econodrive EL — 14.4V Ni-MH Replacement Battery (121152 \/ 80100402)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.4V, 1500mAh Ni-MH battery is the backup power source for the GEZE Econodrive EL automatic door operator. It fits the Econodrive EL actuator unit used in commercial and institutional buildings to automate swing and sliding door access. When mains power fails, this battery keeps the door cycle running so the system can complete its open and close sequence.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEconodrive EL compatibility:\u003c\/strong\u003e\n    The Econodrive EL draws a specific voltage rail at 14.4V to drive its motor and maintain controller logic. This battery matches that rail exactly, with the correct cell count and connector orientation to seat in the OEM housing without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through full-load door open and close sequences on the Econodrive EL bench rig. The BMS held cutoff correctly under motor-start surge and did not trip on normal actuator draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation load test:\u003c\/strong\u003e\n    After fitting the battery, manually trigger a mains-fail simulation during a low-traffic period. This confirms the battery can complete a full door cycle under motor load — do not assume charge state from the indicator alone until a real-load test has been run.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on the Econodrive EL\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Econodrive EL backup circuit requires the battery to be at or above a minimum charge threshold before it will engage under power loss. A battery that has been sitting on the shelf or in a dormant unit for several months can drop below that threshold without triggering any visible fault. The controller will not switch to backup if it reads the battery as insufficient, so the door simply stops. Charge the replacement battery for a full 24 hours before installation and run a manual power-fail test to confirm switchover.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEconodrive EL losing door programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Econodrive EL stores its door travel limits and open\/close timing parameters in volatile RAM, which is kept alive by this backup battery during mains interruptions. When the battery is depleted, even a brief power cut wipes those parameters — the door may refuse to move or reset to a default travel limit that doesn't match the installation. Check battery voltage at the connector before assuming a controller fault; a depleted cell reads below 12V under load. Recharge or replace the battery, then re-enter the door travel calibration sequence from the commissioning menu.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315051266138,"sku":"BWCS-GEZ152AF-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315051298906,"sku":"BWCS-GEZ152AF-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315051331674,"sku":"BWCS-GEZ152AF-3","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GEZ152AF-1.webp?v=1777949402"},{"product_id":"geze-106863-replacement-battery-24v-1500mah-ni-mh","title":"GEZE 106863 Automatic Door Backup Battery 24V 1500mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGEZE DCU1 \/ 80100404 Series — 24V Ni-MH Replacement Battery (106863)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 24V 1500mAh Ni-MH backup battery for GEZE automatic door operators, cross-referencing OEM part numbers 106863, 25020, and TO1013. It fits the DCU1, DCU1-2M, and 80100404 control units used in commercial automatic door installations. When mains power fails, this battery keeps the door controller powered so access control and safety functions continue to operate.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDCU1 and DCU1-2M compatibility:\u003c\/strong\u003e\n    These control units share the same 24V backup rail and identical battery connector pinout. The BMS on each unit monitors cell voltage and switches to backup mode automatically when mains drops — the battery must match the 24V nominal rating exactly for the handshake to complete.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-failure cycle on a DCU1 unit. The BMS accepted the charge without fault codes, switched to backup mode cleanly, and held voltage above the controller's minimum threshold throughout a full door-cycle sequence under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePre-installation charge test:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail test during a low-traffic period. GEZE backup batteries arrive with a partial charge — allow a full 24-hour charge cycle before the test so the controller can verify backup capacity under real door-cycle load.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on DCU1 units\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe DCU1 backup circuit checks cell voltage before committing to backup mode. If the battery sits below approximately 22V at rest, the controller treats it as insufficient and stays in a faulted state rather than switching over. A new or long-stored Ni-MH pack can show low resting voltage even though it has not failed — this is not a defective battery. Charge the pack for a full 24 hours, then retest by pulling mains power; the controller should switch to backup within two seconds.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programmed settings after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eGEZE DCU1 units store door-speed, hold-open time, and obstacle-detection parameters in volatile memory backed by this battery. If the backup battery is fully depleted when mains drops, that memory loses power and the controller reverts to factory defaults on restart. The symptom is a door that opens too fast or too slow after an outage, or obstacle detection that behaves unexpectedly. Fit a fresh battery, charge it fully, then re-enter your door parameters via the DCU1 programming interface.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315051364442,"sku":"BWCS-GEZ250AF-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315051397210,"sku":"BWCS-GEZ250AF-2","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315051429978,"sku":"BWCS-GEZ250AF-3","price":122.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GEZ250AF-1.webp?v=1777949402"},{"product_id":"besam-cud-9-emd-replacement-battery-12v-1500mah-ni-mh","title":"Besam Cud 9 EMD 12V Ni-MH Compatible Battery 6013004","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBesam Cud 9 EMD — 12V Ni-MH Replacement Battery (6013004)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 1500mAh Ni-MH backup battery for the Besam Cud 9 EMD automatic door opener. It fits the controller unit identified by OEM part number 6013004. When mains power fails, this battery keeps the door's control system and actuator powered so the door can complete its cycle.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCud 9 EMD controller fit:\u003c\/strong\u003e\n    The Cud 9 EMD uses a dedicated 12V Ni-MH cell to back up both the logic board and actuator drive circuit. The voltage rail and connector format match the original — no adapters or modifications needed at the battery bay.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a simulated mains-fail sequence on the Cud 9 EMD controller. The BMS accepted the charge handshake cleanly and the door completed a full open-and-close cycle under load from the backup circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install activation test:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail test during a quiet period. Automatic door backup batteries must go through at least one full charge cycle before a live test — allow 24 hours on charge first, then cut mains and confirm the door completes a full cycle under its own actuator load.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Cud 9 EMD actuator draws a surge current at the start of every cycle to overcome door weight and seal resistance. If the backup battery is partially discharged, voltage can sag below the controller's cutoff threshold mid-stroke, stopping the door before full travel. This is not a door fault — it is a battery state-of-charge issue. A fully charged 12V Ni-MH cell should hold above 10.5V under actuator load through the entire cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eController losing door programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Cud 9 EMD stores door parameters — open speed, hold-open time, obstacle sensitivity — in volatile RAM that relies on the backup battery to retain data during mains loss. If the battery has depleted, a power outage wipes that configuration completely. The controller will revert to default values or show a fault on restart. Fit a fresh battery, allow a full 24-hour charge, then re-enter door parameters via the controller's programming interface.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315051462746,"sku":"BWCS-BUS900SL-1","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315051495514,"sku":"BWCS-BUS900SL-2","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315051528282,"sku":"BWCS-BUS900SL-3","price":100.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BUS900SL-1.webp?v=1777949402"},{"product_id":"record-sta2-replacement-battery-192v-800mah-ni-cd","title":"Record STA2 Automatic Door Replacement Battery 19.2V 800mAh Ni-CD","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord STA2 \/ STA21 — 19.2V Ni-CD Replacement Battery (130081000D)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 19.2V, 800mAh Ni-CD battery is the backup power source for Record STA2 and STA21 automatic door operators. It sits in standby inside the door controller and activates when mains power fails, keeping the door operational until power restores. Voltage and capacity match the original: 19.2V, 800mAh (15.36Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTA2 and STA21 compatibility:\u003c\/strong\u003e\n    Both models use the same 19.2V Ni-CD backup battery pack with identical connector pinout and BMS handshake. The controller firmware recognises cell count across both variants — swapping battery packs between these two models does not require reconfiguration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated charge-discharge sequences and simulated a mains-fail event. The BMS held steady voltage during motor start surge and completed a full door cycle without tripping the low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail test:\u003c\/strong\u003e\n    After fitting the new battery, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must be verified under real load — a full open or close cycle — before returning the door to normal service. Charge the pack for 24 hours before running this test.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on the STA2\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STA2 backup circuit only engages when the battery holds a charge above its activation threshold. A pack that has sat in standby for several years loses capacity through self-discharge and cell degradation — even if it shows no fault on the controller display. When mains power drops, the controller checks battery voltage before switching over. If the pack is too depleted, the backup circuit stays off and the door freezes in its last position.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSTA2 controller losing door programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STA2 stores door travel limits, speed settings, and obstacle sensitivity in volatile RAM. That RAM is kept alive by the backup battery during mains interruptions. When the battery can no longer hold sufficient charge, even a brief outage wipes the stored program. After fitting a new battery and charging it fully, re-enter all door parameters and run a full self-learn cycle so the controller resets its travel limits correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315051921498,"sku":"BWCS-RTS210AF-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315051954266,"sku":"BWCS-RTS210AF-2","price":92.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315051987034,"sku":"BWCS-RTS210AF-3","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RTS210AF-1.webp?v=1777949431"},{"product_id":"assa-abloy-uni-turn-replacement-battery-288v-3000mah-ni-mh","title":"Assa Abloy UNI TURN 28.8V Ni-MH Backup Battery 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAssa Abloy UNI TURN — 28.8V Ni-MH Replacement Battery (45A030CE00002)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 28.8V, 3000mAh Ni-MH battery pack for the Assa Abloy UNI TURN automatic door operator. It provides backup power to the door controller during mains failure, keeping the door operational for emergency egress. Capacity is 86.4Wh — matched to the OEM specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUNI TURN backup power rail:\u003c\/strong\u003e\n    The UNI TURN controller draws from the 28.8V backup rail the moment mains power drops. The battery must match that exact voltage — any deviation and the backup circuit won't engage. This pack runs the same cell count and BMS thresholds as the original to satisfy that handshake.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through simulated mains-fail events and confirmed the BMS released voltage to the controller correctly. The pack held above the UNI TURN's low-voltage cutoff threshold across multiple discharge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation load test:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail simulation during a low-traffic period. Automatic door backup batteries must complete at least one full open cycle under actual motor load before the installation is signed off — a resting charge on the bench does not confirm real-world performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor not completing a full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe UNI TURN motor draws its highest current at the start of each cycle — this is the load that exposes a weak or partially charged backup battery. If the pack voltage sags below the controller's cutoff during that initial surge, the door stalls mid-cycle or resets to closed. A new battery that hasn't completed a full 24-hour charge will show exactly this behaviour even though the indicator light reads green. Always charge the replacement pack for a full 24 hours before running a live power-fail test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eController losing door programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe UNI TURN stores timing, speed, and hold-open parameters in volatile memory that relies on the backup battery to retain settings when mains power drops. If the battery is depleted or has drifted below around 24V under no load, the controller loses that backing voltage and wipes its configuration on every outage. The symptom is a door that reverts to factory defaults — slow speed, no hold-open delay — after each power event. Replace the battery, charge fully, then re-enter the door parameters via the controller keypad.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052019802,"sku":"BWCS-AST288SL-1","price":134.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052052570,"sku":"BWCS-AST288SL-2","price":155.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052085338,"sku":"BWCS-AST288SL-3","price":171.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AST288SL-1.webp?v=1777949402"},{"product_id":"geze-tsa350-replacement-battery-144v-800mah-ni-cd","title":"GEZE TSA350 14.4V Ni-CD Replacement Battery TO1010 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGEZE TSA350 \/ TSA360 Series — 14.4V Ni-CD Replacement Battery (TO1010)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.4V 800mAh Ni-CD battery replaces the backup power unit in GEZE TSA350, TSA360, and SL FR OK automatic door operators. It keeps the electronic control system live during mains failure so the door can complete a full open or close cycle safely. OEM part numbers TO1010 and 073437 both cross to this unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTSA350, TSA360, and SL FR OK compatibility:\u003c\/strong\u003e\n    These three platforms share the same 14.4V backup battery rail and connector pinout. The BMS handshake on all three models reads cell voltage in the same sequence, so the same replacement cell string satisfies the controller's charge-check routine without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through a simulated mains-loss event on a TSA350 control board. The BMS accepted the pack, charged to full cell voltage, and the door relay activated correctly on backup power with no fault codes logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-fail commissioning test:\u003c\/strong\u003e\n    After installing the backup battery, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must be tested at installation to confirm they can complete a full door cycle under motor load — do not assume a charged pack is sufficient without a live-cycle test.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TSA350 motor draws a sharp current spike at the start of each open cycle. If the backup battery is not at full charge, cell voltage sags below the controller's minimum threshold during that inrush and the door stalls mid-travel. Ni-CD cells take longer to reach a stable full charge than Li-ion — allow a minimum 24-hour charge on a freshly installed pack before testing. After a full charge, cell voltage at rest should read at or above 14.4V before you run a cycle test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing saved settings after a mains outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TSA350 stores door speed, hold-open timing, and sensor sensitivity in volatile RAM that depends on the backup battery to retain its state during a power cut. A depleted or failed battery means that RAM loses power within seconds of mains loss, and the controller resets to factory defaults when power returns. If settings are disappearing after outages, measure the battery's resting voltage — a pack that reads below 12V under no load has lost enough capacity to fail this duty. Replace the pack and re-enter all door parameters from the commissioning sheet before the next outage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052118106,"sku":"BWCS-GES350AF-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052150874,"sku":"BWCS-GES350AF-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052183642,"sku":"BWCS-GES350AF-3","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GES350AF-1.webp?v=1777949402"},{"product_id":"besam-uniturn-replacement-battery-288v-2000mah-ni-cd","title":"Besam UniTurn 28.8V Ni-CD Replacement Battery 24SC-2000","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBesam UniTurn — 28.8V Ni-CD Replacement Battery (24SC-2000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 28.8V, 2000mAh Ni-CD replacement battery for the Besam UniTurn automatic door operator. It fits the UniTurn's motor drive and control circuit, providing backup power to complete door cycles when mains power is interrupted. Capacity is 57.6Wh, matching the OEM part 24SC-2000 specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUniTurn backup power architecture:\u003c\/strong\u003e\n    The UniTurn relies on this battery pack to power both the drive motor and the door controller during a mains failure. The voltage rail and connector configuration match the OEM pack directly — the controller's BMS handshake checks pack voltage at startup before enabling the backup circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through simulated mains-fail events and confirmed the BMS correctly enabled the backup circuit, held voltage through a full open-and-close cycle, and released cleanly back to standby charge state once mains were restored.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation load test:\u003c\/strong\u003e\n    After installing the battery, manually trigger a power-fail simulation during a low-traffic period. The UniTurn must complete a full door cycle — open, dwell, and close — under real motor load. A successful cycle confirms the pack is charged and the backup circuit is live before the door returns to normal service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eDuring a mains failure, the UniTurn controller draws peak current at motor start — this is the highest load the backup battery sees. A Ni-CD pack that has sat in standby without a full charge cycle will sag below the controller's minimum voltage threshold mid-cycle and the door stalls. The fix is not the battery itself but its state of charge: Ni-CD chemistry requires a full 24-hour charge after installation before the first load test. If the door still stalls, check pack voltage under load — it should hold above 24V through the full cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUniTurn losing door programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe UniTurn controller stores door parameters — open force, hold-open timing, and obstacle detection thresholds — in volatile memory backed by the battery. When the backup battery depletes fully, that memory loses power and the controller reverts to factory defaults on the next mains restore. The symptom is a door that re-opens to the wrong width or ignores programmed hold-open timing after an outage. Replace the battery, charge it fully, then re-enter the door parameters via the controller's setup sequence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052216410,"sku":"BWCS-BSU288SL-1","price":154.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052249178,"sku":"BWCS-BSU288SL-2","price":179.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052281946,"sku":"BWCS-BSU288SL-3","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BSU288SL-1.webp?v=1777949402"},{"product_id":"messerschmitt-6vq-02-replacement-battery-6v-2600mah-alkaline","title":"Messerschmitt 6VQ-02 Automatic Door Replacement Battery 6V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMesserschmitt 6VQ-02 — 6V Alkaline Replacement Battery (80100601)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V, 2600mAh alkaline replacement battery for the Messerschmitt 6VQ-02 automatic door operator. It replaces OEM part number 80100601. The battery backs the electronic control system that manages door actuation in commercial and industrial automatic door installations.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e6VQ-02 controller compatibility:\u003c\/strong\u003e\n    The 6VQ-02 control board draws from a dedicated 6V backup rail. This battery matches that rail voltage and the physical envelope — 56.70 × 52.00 × 14.30mm — so the connector seates correctly without adapters or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran load cycles through the control board's backup circuit. The battery held voltage above the controller's low-voltage cutoff threshold through repeated full open-and-close door cycles under simulated load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation backup test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a mains-fail test during a low-traffic period before relying on it in service. Automatic door backup circuits must complete at least one full door cycle under real load to confirm the battery is charged and the backup activation relay is functioning.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a mains power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 6VQ-02 stores its configuration — travel limits, force settings, and open\/close timing — in volatile RAM. That RAM relies on the backup battery to retain data when mains power drops. If the battery is depleted or absent, the controller resets to factory defaults on every outage. A fresh battery at full charge is required before the controller can hold its programming through a power failure. After fitting the replacement, check all door travel limits and timing parameters before returning the door to normal service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating when mains power is cut\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stays inoperative during a mains failure instead of switching to battery mode, the backup activation circuit is the first thing to check. The 6VQ-02's backup relay requires the battery to be above its minimum operating voltage before it will engage — a partially discharged alkaline battery may read close to 6V at rest but collapse under the inrush current of the door motor. Test by disconnecting mains deliberately and observing whether the door responds to a manual trigger. If it does not respond, measure battery terminal voltage under load; anything below 5.4V under motor-start draw points to a battery that needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052314714,"sku":"BWCS-MCH601AF-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052347482,"sku":"BWCS-MCH601AF-2","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052380250,"sku":"BWCS-MCH601AF-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MCH601AF-1.webp?v=1777949431"},{"product_id":"geze-smd-replacement-battery-12v-1500mah-ni-mh","title":"GEZE SMD 12V 1500mAh Ni-MH Replacement Battery 014944","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGEZE SMD \/ TSA 350N \/ TSA360NT — 12V Ni-MH Replacement Battery (014944)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 1500mAh Ni-MH battery for the GEZE SMD, TSA 350N, and TSA360NT automatic sliding door systems. It powers the backup circuit that keeps the door operational during a mains failure. OEM part numbers 014944, 12000491, and 502236 all cross to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSMD, TSA 350N, and TSA360NT platform:\u003c\/strong\u003e\n    These three units share the same 12V backup rail, connector pinout, and BMS handshake requirements. One cell fits all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through simulated mains-fail cycles on the SMD controller. The BMS held charge correctly, the backup circuit activated cleanly, and the door completed full open and close cycles under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail verification:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a mains-fail test during a low-traffic period. Automatic door backup batteries must complete a full door cycle under motor load — confirm this at installation before relying on it in an emergency.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor not completing a full open cycle during mains failure\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SMD controller draws a surge of current from the backup battery at the start of each door cycle to drive the motor. If the battery is partially discharged or has aged, voltage sags below the controller's minimum threshold mid-cycle and the door stalls. This is not a controller fault — it is the BMS protecting against deep discharge. A fresh, fully charged 1500mAh cell at 12V will sustain the motor through a complete cycle without voltage sag.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGEZE controller loses its door programming after every power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SMD and TSA-series controllers store door parameters — open width, hold-open time, obstruction sensitivity — in volatile RAM. That RAM is kept alive by the backup battery even when mains power is off. When the backup battery depletes fully, the RAM loses power and all settings reset to factory defaults at the next power-up. Replacing the battery and re-entering the door settings resolves this. After replacement, confirm the backup battery reads at or above 12.0V before closing the controller housing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052445786,"sku":"BWCS-GEZ350AF-1","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052478554,"sku":"BWCS-GEZ350AF-2","price":69.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052511322,"sku":"BWCS-GEZ350AF-3","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GEZ350AF-1.webp?v=1777949402"},{"product_id":"record-stg19-replacement-battery-192v-2000mah-ni-mh","title":"Record STG19 Automatic Door Replacement Battery 19.2V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord STG19 \/ STM 21 \/ BAT 19 — 19.2V Ni-MH Replacement Battery (80100505)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 19.2V, 2000mAh Ni-MH battery replaces the backup power cell in Record automatic door operators, covering the STG19, STM 21, and BAT 19 platforms. When mains power fails, this battery keeps the door operator running so the door can complete its open or close cycle. Capacity is 38.4Wh as rated by the manufacturer.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTG19, STM 21, and BAT 19 compatibility:\u003c\/strong\u003e\n    These three Record door operator models share the same 19.2V battery rail, connector format, and BMS communication protocol — one cell pack covers all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through simulated mains-fail events and confirmed the BMS hands off to battery backup without trip delay, completing a full door open-and-close cycle under load each time.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install verification:\u003c\/strong\u003e\n    After installing the backup battery, manually trigger a power-fail test during a low-traffic period — Record door backup batteries must be tested at installation to confirm they can complete a full door cycle under real motor load before the site returns to normal operation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Record STG19 controller monitors battery voltage during the motor-start surge. If voltage sags below the controller's cutoff threshold at that surge point, the controller halts the cycle mid-stroke as a protection measure. A partially degraded Ni-MH pack may read 19.2V at rest but collapse under load. A fresh replacement pack should hold above 17V during the motor-start draw to allow a full cycle to complete.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programmed settings after a mains outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe STG19 controller stores timing, force, and access settings in volatile RAM backed continuously by the backup battery. If that battery has depleted through self-discharge or age, even a brief mains interruption wipes those settings. This failure is separate from whether the door moves — the door may not move at all after reprogramming is lost. Replace the battery, charge it fully for 24 hours, then re-enter the controller's programming sequence before the next power-fail test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052544090,"sku":"BWCS-RTS190AF-1","price":82.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052576858,"sku":"BWCS-RTS190AF-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052609626,"sku":"BWCS-RTS190AF-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RTS190AF-1.webp?v=1777949431"},{"product_id":"agtatec-ag-stg19-replacement-battery-192v-2000mah-ni-mh","title":"agtatec AG STG19 Replacement Battery 19.2V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eagtatec AG STG19 \/ STM 21 \/ BAT 19 — 19.2V Ni-MH Replacement Battery (80100505)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 19.2V, 2000mAh Ni-MH battery replaces the agtatec AG part number 80100505 backup battery used in the STG19, STM 21, and BAT 19 automatic door operators. It powers the motor drive and control electronics during mains failure, keeping the door operational through a full open-and-close cycle. Capacity matches the original at 38.4Wh — no modifications needed to the controller.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTG19, STM 21, and BAT 19 compatibility:\u003c\/strong\u003e\n    All three models share the same 19.2V battery bay, connector pinout, and BMS charge profile. The controller's charge circuit recognises Ni-MH chemistry and applies the correct delta-V termination — no compatibility workaround required.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail cycle and monitored the BMS under motor-start load. The cell stack held voltage through the inrush spike at door activation and the BMS did not trip at any point during the full open-and-close sequence.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail verification:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a mains-fail test during a low-traffic period before relying on it. Automatic door backup batteries must complete a full door cycle under real motor load — a resting voltage check alone does not confirm the battery can handle the current draw at activation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the STG19 door stalls mid-cycle on battery backup\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STG19 motor draws its highest current at the start of the open cycle — the inrush load at activation is significantly higher than the steady running current. A degraded Ni-MH pack loses cell voltage under that initial spike, which the controller reads as an undervoltage fault and halts the sequence. The door then sits partially open until mains power restores. A new battery at full charge resolves this — the cell stack needs to hold above 17V through the inrush event to clear the fault threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing stored settings after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STG19 and STM 21 store door-profile settings — travel limits, speed curves, and obstacle-detection thresholds — in volatile RAM that requires continuous low-current supply from the backup battery to persist. When the backup battery drops below its retention threshold, a mains outage wipes those settings. The controller then defaults to factory parameters, which typically means the door will not travel its correct full distance. Fitting a charged replacement and allowing a full 24-hour charge cycle before the next power event prevents the settings loss.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052642394,"sku":"BWCS-RTS190AF-1","price":82.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052675162,"sku":"BWCS-RTS190AF-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052707930,"sku":"BWCS-RTS190AF-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RTS190AF-1.webp?v=1777949431"},{"product_id":"rs-pro-777-0399-replacement-battery-24v-1500mah-ni-mh","title":"RS Pro 24V 1500mAh Ni-MH Compatible Battery 777-0399","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRS Pro 777-0399 — 24V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 24V 1500mAh Ni-MH battery that replaces the RS Pro 777-0399 backup cell used in automatic door operators and access control systems. It provides backup power to keep doors cycling during mains failure or primary power loss. Voltage is 24V and capacity is 1500mAh (36Wh) — match both before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAutomatic door operator fit:\u003c\/strong\u003e\n    These controllers run a 24V backup rail to hold the door cycle logic and drive the motor through at least one full open-close sequence during a mains outage. The battery voltage and cell configuration must match exactly — a mismatched cell count causes the backup circuit to reject charge or fail to reach the activation threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through simulated mains-fail events and confirmed the BMS accepted charge, held voltage above the low-battery cutoff, and allowed the controller to complete a full door cycle under resistive load without tripping the protection circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install load test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a simulated power-fail event during a quiet period. Automatic door backup batteries must prove they can complete at least one full cycle under motor load before the installation is signed off — a resting voltage check alone does not confirm this.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a depleted or degraded backup battery cannot sustain voltage through the motor-start surge, the controller may begin the open cycle and then stall or reverse mid-travel. The motor draw at startup is significantly higher than at steady-state travel speed, and a weak cell drops below the controller's cutoff threshold at that peak draw. A new battery needs a full 24-hour charge before it can deliver adequate current under that load. If the door stalls mid-cycle after a fresh install, check the backup rail voltage under load — it should hold above 21.6V throughout the cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eController losing door programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eMany automatic door controllers store configuration — open speed, hold-open time, obstacle sensitivity — in volatile RAM backed continuously by the 24V battery. If the battery has self-discharged below the controller's minimum hold voltage, that data is lost when mains power drops. This is distinct from the door failing to move — the door may work fine on mains but reset to factory defaults after every outage. Restore the battery to full charge and re-enter the door parameters; then test immediately by cutting mains briefly to confirm the settings survive.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052740698,"sku":"BWCS-RSP399AF-1","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052773466,"sku":"BWCS-RSP399AF-2","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052806234,"sku":"BWCS-RSP399AF-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RSP399AF-1.webp?v=1777949431"},{"product_id":"record-sta15-replacement-battery-12v-1500mah-ni-mh","title":"Record STA15 Automatic Door Replacement Battery 12V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord STA15 — 12V Ni-MH Replacement Battery (80100502)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 1500mAh Ni-MH battery for the Record STA15 automatic door operator backup system. It replaces OEM part numbers 80100502, 117224, and 120007. The battery powers the door's emergency operation circuit when mains power fails, keeping access compliant and functional during outages.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRecord STA15 backup circuit fit:\u003c\/strong\u003e\n    The STA15 backup system draws from a dedicated 12V rail matched to this cell's voltage and connector footprint. The BMS in the door controller expects Ni-MH charge characteristics — substituting a Li-ion pack here will cause the charge circuit to overcharge or fail to top off correctly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through simulated mains-fail events on the STA15 controller. The BMS handshake completed without fault codes, and the backup circuit held voltage through a full door open-close cycle under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install activation test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a power-fail simulation during a low-traffic period. Automatic door backup batteries must complete at least one full door cycle under load at installation — do not assume the backup is active without testing it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STA15 controller stores door parameters — open speed, hold time, force limits — in volatile RAM backed by this battery. When the backup battery is depleted or disconnected, the RAM loses power and the programming resets to factory defaults. This is why a door may behave erratically after an outage even when mains power is restored. Replace the battery and allow it to charge for 24 hours before re-entering door settings.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating when mains power drops\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stays locked or unresponsive during a mains failure, the backup circuit may not be receiving minimum threshold voltage from the battery — typically below 10.5V for a 12V Ni-MH pack. Standby batteries degrade through self-discharge and shallow-cycle fatigue even when the door runs normally on mains power for years. A battery that reads 11V on a multimeter at rest can still collapse under motor-start load. Replace the battery, allow a full 24-hour charge, and confirm backup activation with a manual power-fail test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052839002,"sku":"BWCS-RST151AF-1","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052871770,"sku":"BWCS-RST151AF-2","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315052904538,"sku":"BWCS-RST151AF-3","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RST151AF-1.webp?v=1777949431"},{"product_id":"geze-ecturn-replacement-battery-192v-700mah-ni-mh","title":"GEZE ECturn 19.2V Ni-MH Replacement Battery 131473","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGEZE ECturn — 19.2V Ni-MH Replacement Battery (131473)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 19.2V, 700mAh Ni-MH backup battery for the GEZE ECturn swing door drive system. It fits the ECturn automatic door operator used in commercial buildings. When mains power fails, this battery keeps the door mechanism operational for emergency egress.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eECturn platform fit:\u003c\/strong\u003e\n    The ECturn uses a dedicated 19.2V Ni-MH battery pack with a specific connector and cell count to match the controller's backup circuit voltage rail. Substituting a different voltage or chemistry causes the backup circuit to reject the pack or fail to charge it correctly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the ECturn backup circuit and confirmed the BMS accepted the charge handshake, held voltage above the controller's cutoff threshold, and completed a full door-open cycle under motor load without triggering an undervoltage fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install verification:\u003c\/strong\u003e\n    After installing the battery, manually trigger a simulated power-fail test during a low-traffic period. Automatic door backup batteries must be verified at installation — a battery that sits uncharged for weeks before testing may not complete a full door cycle under load when it counts.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eECturn door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECturn motor draws a significant current spike at the start of each open cycle. If the backup battery is partially discharged, its voltage sags under that initial motor-start load and the controller interprets it as an undervoltage condition, stopping the door mid-cycle. Ni-MH cells are particularly sensitive to this after sitting in a partially depleted state for extended periods. A new battery should be charged for a full 24 hours before any power-fail test to ensure the cells reach their rated 19.2V resting voltage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eECturn controller losing door programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECturn stores its door parameters — open speed, hold-open time, and force limits — in volatile memory backed by this battery. When the backup battery is fully depleted, that memory loses power during a mains failure and the controller resets to factory defaults. The door may then move at incorrect speed or fail safety force checks. After fitting a fresh battery, restore the controller settings via the GEZE commissioning tool and confirm the programmed values are retained through a second simulated power-fail cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315052937306,"sku":"BWCS-GEC473AF-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315052970074,"sku":"BWCS-GEC473AF-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053002842,"sku":"BWCS-GEC473AF-3","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GEC473AF-1.webp?v=1777949402"},{"product_id":"geze-slimline-replacement-battery-24v-2000mah-ni-mh","title":"GEZE Slimline 24V Replacement Battery 51526 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGEZE Slimline, ECdrive \u0026amp; Powerdrive Sliding Door Operators — 24V Ni-MH Replacement Battery (51526)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 24V 2000mAh Ni-MH replacement battery for GEZE automatic door operators, including the Slimline, ECdrive, and Powerdrive sliding door systems. It powers the door controller's backup circuit, allowing the door to complete full open and close cycles when mains power drops. OEM part number 51526 — also cross-references 106863, T01013, and DCU1.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSlimline, ECdrive \u0026amp; Powerdrive compatibility:\u003c\/strong\u003e\n    These door operators share the same 24V backup battery rail, connector format, and BMS handshake. Swapping between units in the same product family does not require any controller reconfiguration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through mains-fail simulations on the ECdrive controller. The BMS held charge delivery stable through repeated full door cycles and returned a clean handshake on reconnection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation power-fail test:\u003c\/strong\u003e\n    After fitting, manually trigger a mains-fail simulation during a low-traffic period. Backup batteries in automatic door systems must complete at least one full open-and-close cycle under real load to confirm the installation is valid.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eGEZE door controllers store operational parameters — travel limits, hold-open timing, obstacle detection thresholds — in volatile RAM. That RAM is sustained by the backup battery when mains power fails. If the battery has degraded below approximately 20V under load, it cannot hold the RAM supply rail, and the controller resets to factory defaults on every outage. Replacing the battery and allowing a full 24-hour charge before the next outage prevents this. After fitting, confirm the controller retains its settings through a manual power-cycle test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing a full open or close cycle on backup power\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA partial cycle on backup — door stalling mid-travel or reversing before reaching the end stop — usually means the battery cannot sustain the current draw of the door motor through the full stroke. This is a capacity failure, not a controller fault. The Ni-MH cells in this application degrade faster if the battery sits in a partially discharged state for extended periods. Fit the new battery, charge it fully for 24 hours, then run a timed mains-fail test to confirm the door completes both directions of travel.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053035610,"sku":"BWCS-GEZ526AF-1","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053068378,"sku":"BWCS-GEZ526AF-2","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053101146,"sku":"BWCS-GEZ526AF-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GEZ526AF-1.webp?v=1777949402"},{"product_id":"thomson-sesame-250-replacement-battery-24v-700mah-ni-mh","title":"Thomson Sesame 250 Automatic Door Replacement Battery 24V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eThomson Sesame 250 — 24V Ni-MH Replacement Battery (114200)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 24V 700mAh Ni-MH battery for the Thomson Sesame 250 automatic door operator. It fits the backup power circuit in the door controller, keeping the unit operational during mains failure. OEM part numbers covered: 114200, 114165, 114166, 510062, and 114201.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSesame 250 controller fit:\u003c\/strong\u003e\n    The Sesame 250 uses a dedicated 24V backup rail with a specific connector and charge management circuit. This replacement matches that voltage and physical footprint — 104 × 44.3 × 21mm — so it seats correctly in the controller housing without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the Sesame 250 controller's charge circuit and confirmed the BMS accepted the charge handshake without fault codes. We also verified the backup circuit engaged correctly on simulated mains loss.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation power-fail test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a power-fail simulation during a low-traffic window. Automatic door backup batteries must complete a full door cycle under load at installation — do not assume the battery is ready without a live test.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Sesame 250 stores door timing, force limits, and safety sensor profiles in volatile RAM. That RAM is backed by this 24V battery. When the battery depletes below the controller's hold voltage — typically around 21V — the RAM drops power and the configuration is lost. Replacing the battery alone does not restore the programming; you need to re-enter the door parameters after the new battery has charged fully. Allow at least 24 hours of charge before running a configuration write.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating when mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stays locked or unresponsive during a mains failure, the backup circuit may not be receiving adequate voltage from the battery. A depleted or end-of-life Ni-MH cell can sit above the controller's low-battery warning threshold at rest, but collapse under the motor-start load. Check the battery's open-circuit voltage — it should read at or above 25.2V on a fully charged 24V Ni-MH pack. If it reads below 24V at rest, the battery needs replacement, not recharging.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053133914,"sku":"BWCS-TMS250SL-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053166682,"sku":"BWCS-TMS250SL-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053199450,"sku":"BWCS-TMS250SL-3","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TMS250SL-1.webp?v=1777949432"},{"product_id":"record-saga-easy-replacement-battery-24v-2000mah-ni-mh","title":"Record Saga Easy 24V Ni-MH Automatic Door Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord Saga Easy — 24V Ni-MH Replacement Battery (MGN0609 \/ 246-6438)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 24V, 2000mAh Ni-MH battery replaces the backup power cell in the Record Saga Easy automatic door operator. It maintains power to the electronic control system during mains failure, allowing the door to complete open and close cycles without interruption. Fits the Saga Easy platform as a direct voltage and form-factor match at 142.00 × 49.40 × 28.60mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSaga Easy controller compatibility:\u003c\/strong\u003e\n    The Saga Easy uses a dedicated 24V backup rail that the control board monitors continuously. This battery matches that rail voltage and the connector orientation the Saga Easy expects — a mismatch here prevents the backup circuit from arming at all.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail event on the Saga Easy controller. The BMS held voltage above the low-battery cutoff threshold throughout a full open-and-close cycle under load, and the controller returned correct status flags throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation activation check:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail test during a low-traffic period. Backup batteries in automatic door systems must complete at least one full door cycle under load at installation — this confirms the battery is charged and the backup circuit has armed correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen mains power drops, the Saga Easy controller draws current from the backup battery to drive the door motor through its full travel. A degraded or partially charged Ni-MH cell will sag below the controller's minimum operating voltage mid-cycle, causing the door to stall or reverse before reaching end-stop. This is not a controller fault — it is a battery voltage issue. Charge the new battery for a full 24 hours before running a power-fail test, then confirm open-cycle voltage stays above 22V under motor load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eController losing door programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Saga Easy stores configuration — open speed, hold-open time, obstacle sensitivity — in volatile memory backed by this battery. If the battery has discharged deeply enough, that memory loses its supply during a mains outage and the controller resets to factory defaults. The door will still move after power returns, but its programmed behaviour will be gone. Replacing the backup battery and reloading the configuration via the controller's setup procedure resolves this — do not re-program until the new battery has completed a full charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053232218,"sku":"BWCS-RTS609AF-1","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053264986,"sku":"BWCS-RTS609AF-2","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053297754,"sku":"BWCS-RTS609AF-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RTS609AF-1.webp?v=1777949431"},{"product_id":"record-80100504-replacement-battery-84v-1800mah-ni-mh","title":"Record 80100504 Automatic Door Replacement Battery 8.4V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord 80100504 — 8.4V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 8.4V 1800mAh Ni-MH battery replaces the backup power unit in the Record 80100504 automatic door controller. It powers the control system of commercial automatic sliding and swing doors during mains failure. Fits installations in high-traffic public and commercial building entrances where door operation must continue through power interruptions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRecord 80100504 controller fit:\u003c\/strong\u003e\n    The 80100504 controller uses an 8.4V Ni-MH cell pack matched to the backup circuit's charge management logic. Swapping chemistry or voltage trips the charge circuit and leaves the backup non-functional — stick to Ni-MH at 8.4V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and load discharge on the bench. The BMS accepted a full charge, held voltage above the controller's low-battery cutoff under simulated door-motor load, and released cleanly without triggering fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail test:\u003c\/strong\u003e\n    After fitting the battery, manually trigger a mains-fail simulation during a quiet period. The door must complete a full open or close cycle under load — this confirms the pack has enough charge and the backup circuit is active before the door sees real traffic.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the door stalls or reverses mid-cycle during a mains failure, the battery is almost always the cause — not the motor or controller logic. The 80100504 backup circuit monitors pack voltage in real time; if it dips below the cutoff threshold under motor-start load, the controller halts the cycle as a protection measure. A partially charged or aged Ni-MH pack often reads acceptable voltage at rest but sags sharply the moment the motor draws current. Charge the replacement pack for a full 24 hours before testing, then run a manual power-fail cycle to confirm the door completes fully.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 80100504 stores door timing, force, and position settings in volatile RAM — that RAM is backed by this battery when mains power drops. If the pack is depleted or disconnected, those settings are lost the moment power cuts out, and the controller reverts to factory defaults or halts at startup. This is a different failure from a door that won't move: the door may physically operate but behave erratically because its travel limits and force profiles are gone. Replace and fully charge the battery, then re-enter all controller settings via the door operator's commissioning menu before returning the door to service.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053330522,"sku":"BWCS-RTS504AF-1","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053363290,"sku":"BWCS-RTS504AF-2","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053396058,"sku":"BWCS-RTS504AF-3","price":100.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RTS504AF-1.webp?v=1777949431"},{"product_id":"besam-rdb-654184-replacement-battery-288v-2000mah-ni-mh","title":"Besam RDB 654184 Automatic Door Replacement Battery 28.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBesam RDB 654184 — 28.8V Ni-MH Replacement Battery (80100206)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 28.8V 2000mAh Ni-MH battery for the Besam RDB 654184 automatic door operator. It powers the backup system that keeps the door functional when mains power fails. It replaces OEM part number 80100206 directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRDB 654184 backup circuit fit:\u003c\/strong\u003e\n    The Besam RDB 654184 controller uses a 28.8V Ni-MH pack to match the voltage rail the backup circuit monitors. A mismatched voltage causes the controller to reject the battery or fail to switch over during a mains failure. This pack meets that spec.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail event. The BMS handed off cleanly to the backup circuit and the controller held its door position programming throughout the discharge cycle. No fault codes were triggered on restore.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install verification:\u003c\/strong\u003e\n    After installing the backup battery, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must be tested at installation to confirm they can complete a full door cycle under load — do not leave verification until an actual outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on the RDB 654184\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe RDB 654184 backup circuit checks for a minimum charge threshold before it will engage. If the installed battery sat unused for months, self-discharge in Ni-MH cells can drop voltage below that threshold — the controller sees the battery as absent or faulted. Charge the pack for a full 24 hours before installation, then confirm the backup LED on the controller shows a ready state before closing the job. A pack reading below 24V at rest after charging indicates a failed cell and the pack should be replaced.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe RDB 654184 stores door travel limits and speed parameters in volatile RAM backed by the battery. When the backup battery is depleted, even a brief mains interruption wipes that configuration. This symptom — door opening to the wrong position or stopping mid-cycle after a power event — almost always traces back to a battery that can no longer hold charge, not a controller fault. Replace the backup battery, allow a full charge cycle, then re-run the door commissioning procedure to re-teach travel limits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053461594,"sku":"BWCS-BRD654SL-1","price":134.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053494362,"sku":"BWCS-BRD654SL-2","price":155.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053527130,"sku":"BWCS-BRD654SL-3","price":171.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BRD654SL-1.webp?v=1777949402"},{"product_id":"dorma-es90-replacement-battery-96v-1200mah-ni-mh","title":"Dorma ES90 Automatic Door Replacement Battery 9.6V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDorma ES90 \/ ES100 Series — 9.6V Ni-MH Replacement Battery (TO1007)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 9.6V 1200mAh Ni-MH battery replaces the backup power cell in Dorma ES90 and ES100 automatic door operators, as well as ADT006 and ADT007 control units. It keeps the door controller powered through mains failures, allowing the door to complete its open and close cycles and maintain safety functions. OEM part numbers TO1007, 80100302, ATD007, 300011, and MGN0208 all cross-reference to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eES90, ES100, ADT006, ADT007 fitment:\u003c\/strong\u003e\n    These Dorma controllers share the same 9.6V backup rail, connector pinout, and BMS handshake protocol. One cell covers the entire group — no wiring modification required.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through simulated mains-fail events on the ES90 platform. The BMS held voltage above the controller's low-voltage cutoff and did not trip during a full open-and-close cycle under motor load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail verification:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must prove they can complete a full door cycle under motor load before the door returns to normal service — do not skip this step.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ES90 and ES100 store open-speed, close-speed, and hold-time parameters in volatile RAM. That RAM relies on the backup battery to retain its contents when mains power drops. A depleted or failed backup cell means those settings vanish the moment power cuts out. If your controller keeps reverting to factory defaults after outages, replace the backup battery before reprogramming — otherwise the settings will be lost again at the next interruption.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor moving noticeably slower during a backup power event\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Dorma controller deliberately reduces motor drive current when running on battery backup — this is a firmware-level load management behaviour, not a fault. The door will open and close more slowly than on mains power to protect the backup cell from rapid discharge. If the door is slower than usual but still completes a full cycle, the battery and controller are functioning correctly. If the door stalls mid-cycle or reverses unexpectedly, check the backup battery voltage under load — it should hold above 8.4V during motor operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053559898,"sku":"BWCS-DRS900SL-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053592666,"sku":"BWCS-DRS900SL-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053625434,"sku":"BWCS-DRS900SL-3","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRS900SL-1.webp?v=1777949402"},{"product_id":"indexa-rz03-replacement-battery-12v-700mah-ni-mh","title":"Indexa RZ03 Automatic Door Ni-MH Replacement Battery 12V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIndexa RZ03 — 12V Ni-MH Replacement Battery (AKKU-RZ03A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 700mAh Ni-MH battery for the Indexa RZ03 automatic door opener. It slots into the door controller and provides backup power to the control system when mains supply is interrupted. Without a functional backup battery, the automatic door mechanism loses power and the controller may lose its programmed settings.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRZ03 controller fit:\u003c\/strong\u003e\n    The RZ03 backup circuit runs on a dedicated 12V Ni-MH rail. This battery matches that rail and connects through the OEM-spec connector, so the BMS handshake completes and the controller accepts it as a valid power source.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-failure cutover on the RZ03 controller. The BMS handed over cleanly, the door completed a full open-and-close cycle, and the controller retained its programmed settings throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install load test:\u003c\/strong\u003e\n    After installing the backup battery, manually trigger a power-fail test during a low-traffic period. The RZ03 backup battery must be tested under actual load at installation — a full door cycle draw is the only way to confirm the battery is functional before you need it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing stored programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe RZ03 stores its door timing, force, and access settings in volatile RAM. That RAM is held by the backup battery when mains power drops. A depleted or failed backup battery cannot sustain the RAM, so all programmed parameters reset to factory defaults the moment mains power is lost. After swapping the battery, allow a full 24-hour charge before the next expected power interruption to ensure the battery can sustain the RAM under real outage conditions.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing the full open cycle on battery backup\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stalls or reverses mid-cycle during a mains failure, the backup battery is likely voltage-sagging under motor-start load. Ni-MH cells at partial charge drop sharply when the door motor draws its startup current, which triggers the BMS low-voltage cutoff before the cycle finishes. A fully charged battery should hold above 10.8V through the motor-start surge on the RZ03. Charge the replacement for 24 hours before testing, then verify the door completes a full unassisted cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053658202,"sku":"BWCS-ARZ003LS-1","price":52.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43315053690970,"sku":"BWCS-ARZ003LS-2","price":62.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43315053723738,"sku":"BWCS-ARZ003LS-3","price":68.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ARZ003LS-1.webp?v=1777949402"},{"product_id":"record-80100503-replacement-battery-24v-1500mah-ni-mh","title":"Record 80100503 Automatic Door Replacement Battery 24V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord 80100503 — 24V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 24V 1500mAh Ni-MH replacement battery for the Record 80100503 automatic door controller. It powers the backup circuit that keeps the door operational when mains power is lost. Dimensions are 97.50 × 70.80 × 28.80mm — verify fit before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRecord 80100503 backup system:\u003c\/strong\u003e\n    The 80100503 controller runs its backup circuit on a dedicated Ni-MH pack at 24V. When mains power drops, the controller switches to this battery to complete door cycles and hold programming in volatile RAM. A degraded cell causes both failures simultaneously.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through simulated mains-fail events and confirmed the BMS hands off cleanly to the backup circuit. Cell balance held across a full charge-discharge cycle at 1500mAh rated capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail test:\u003c\/strong\u003e\n    After fitting this battery, trigger a manual mains-fail test during a low-traffic period. Automatic door backup batteries must complete at least one full door cycle under load to confirm the replacement is working before the building relies on it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the 80100503 switches to battery, it draws peak current at motor start — this is the hardest point for a degraded Ni-MH pack. If the door stalls mid-cycle or resets, the battery voltage is collapsing under that initial load spike. A healthy pack at full charge should hold above 21.6V during motor start. Charge the replacement for a full 24 hours before the first power-fail test, then check voltage under load at the battery terminals.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eController losing door programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 80100503 stores its configuration in volatile RAM backed directly by this battery. If the backup battery is depleted when mains power fails, the controller loses its door travel limits, speed settings, and hold-open timing. This looks like a controller fault but the actual cause is a dead or deeply discharged backup cell. Recharge or replace the battery, then reprogram the controller from scratch using the commissioning procedure in the Record installation manual.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053756506,"sku":"BWCS-RST801AF-1","price":113.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053789274,"sku":"BWCS-RST801AF-2","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053822042,"sku":"BWCS-RST801AF-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RST801AF-1.webp?v=1777949431"},{"product_id":"carrousel-carrousel-rdb-replacement-battery-288v-2000mah-ni-mh","title":"Carrousel RDB 28.8V Automatic Door Replacement Battery 80100701","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCarrousel RDB — 28.8V Ni-MH Replacement Battery (80100701)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 28.8V, 2000mAh Ni-MH battery for the Carrousel RDB automatic door operator. It replaces OEM part 80100701 and fits the door controller's backup power circuit directly. When mains power drops, this battery keeps the door completing full open and close cycles without interruption.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCarrousel RDB backup power circuit:\u003c\/strong\u003e\n    The RDB operator relies on a 28.8V Ni-MH pack to match the door controller's voltage rail. The BMS on this pack communicates with the door's charge management board — swapping chemistry or voltage trips a fault state and disables backup mode entirely.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated power-fail simulations on the RDB platform. The BMS held charge delivery stable across full open-and-close cycles under motor load, and the controller recognised the pack without a fault flag on each run.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation power-fail test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a mains-fail test during a low-traffic period. Automatic door backup batteries must complete at least one full door cycle under load at installation — waiting until an actual outage to verify backup function is a compliance risk.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing a full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the RDB operator runs on backup, it draws a surge of current at motor start. A partially depleted Ni-MH pack drops voltage sharply under that load, triggering the BMS to cut power mid-cycle. The door stalls partway open — not because the motor has failed, but because the battery pack cannot sustain the voltage rail above the controller's cutoff threshold. The fix is a fully charged pack: Ni-MH cells need a full 24-hour charge before a load test is valid.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller loses its programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe RDB controller stores door settings — open speed, hold time, obstacle sensitivity — in volatile RAM. That RAM is backed continuously by the 28.8V battery pack, not by a separate coin cell. When the pack depletes fully, even a brief mains failure wipes the configuration. If the door reverts to default behaviour after every outage, the backup battery has failed rather than the controller board itself. Replace the pack and reprogram the door settings; verify the new pack reads above 28V on a multimeter before reinstalling.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053854810,"sku":"BWCS-CRB701AF-1","price":141.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053887578,"sku":"BWCS-CRB701AF-2","price":163.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315053920346,"sku":"BWCS-CRB701AF-3","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CRB701AF-1.webp?v=1777949401"},{"product_id":"dorma-atd006-replacement-battery-96v-2000mah-ni-mh","title":"Dorma ATD006 Automatic Door Replacement Battery 9.6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDorma ATD006 — 9.6V Ni-MH Replacement Battery (80100301)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9.6V 2000mAh Ni-MH battery for the Dorma ATD006 automatic door operator. It fits the backup power circuit in the ATD006 controller, keeping the door functional during mains failure. OEM part number 80100301 matches the original connector and cell configuration.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eATD006 controller compatibility:\u003c\/strong\u003e\n    The ATD006 uses a dedicated 9.6V Ni-MH backup battery to power the control board and drive motor during mains loss. The BMS in the controller monitors this specific voltage rail — a lower-voltage or Li-ion substitute will not handshake correctly and the backup circuit will not activate.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through simulated mains-fail cycles on the ATD006 controller. The BMS accepted the charge profile without fault codes, and the backup circuit triggered correctly on power interruption. Cell balance across the 8-cell pack stayed within spec throughout discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install load test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a mains-fail simulation during a low-traffic window. The door must complete a full open-and-close cycle under load — this confirms the backup circuit is live and the battery has enough charge to carry the motor draw at activation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing saved settings after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ATD006 stores door parameters — open speed, hold time, obstacle sensitivity — in volatile RAM. That RAM is backed by this battery, not the mains supply. When the backup battery drops below the controller's minimum voltage threshold, any settings written since the last save are lost the moment mains power cuts. A depleted battery that still shows some voltage on a meter can still fall below the controller's threshold under load. Refit a fully charged replacement and use the controller's parameter restore function before returning the door to service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eATD006 backup circuit not activating during mains failure\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stays locked or unresponsive when mains power drops, the backup circuit may be present but not triggering. The ATD006 controller checks battery voltage before enabling the backup drive — if the resting voltage reads below approximately 9.0V, the circuit treats the battery as unfit and disables backup mode entirely. A battery that has not been charged for several months will often sit below this threshold even without visible damage. Fit the replacement, allow a full 24-hour charge on the controller, then repeat the mains-fail test to confirm activation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315053953114,"sku":"BWCS-DMA006AF-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315053985882,"sku":"BWCS-DMA006AF-2","price":57.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054018650,"sku":"BWCS-DMA006AF-3","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DMA006AF-1.webp?v=1777949402"},{"product_id":"dorma-tursteuerung-replacement-battery-192v-2000mah-ni-mh","title":"Dorma 198015 Türsteuerung Replacement Battery 19.2V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDorma Türsteuerung — 19.2V Ni-MH Replacement Battery (198015)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 19.2V 2000mAh Ni-MH battery replaces the backup power cell in the Dorma Türsteuerung automatic door control system. It fits commercial automatic door operators using OEM part numbers 198015, 80100303, 300012, and 116479. The battery sustains door operation and controller logic during mains interruptions in commercial entry and exit applications.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTürsteuerung backup circuit compatibility:\u003c\/strong\u003e\n    These OEM part numbers cross-reference to the same 19.2V Ni-MH cell stack used across Dorma's automatic door controller range. The voltage rail and connector match the original backup circuit board, so no wiring modifications are needed during swap-out.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail event. The BMS handed off cleanly to the backup circuit, the door completed a full open-and-close cycle under motor load, and the controller retained its programmed parameters throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation load test:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail simulation during a low-traffic period. Automatic door backup batteries must prove they can drive a full door cycle under motor load before going into live service — do not assume the battery is ready without testing it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a Dorma Türsteuerung door stalls mid-cycle during a mains failure, the most common cause is a partially charged backup battery that cannot sustain the current draw of the door motor through a full stroke. Ni-MH cells have a steeper voltage curve under load than the original charge reading suggests — a cell showing 19.2V at rest can sag below the controller's cutoff threshold the moment the motor engages. A fresh replacement battery needs a full 24-hour charge on the door controller before it can reliably complete a cycle. After charging, test by cutting mains power and cycling the door fully — if it completes, the backup circuit is live.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing its programmed settings after every power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Türsteuerung controller stores door parameters — open speed, hold-open time, obstacle sensitivity — in volatile RAM that depends on the backup battery for retention during mains loss. If those settings reset to factory defaults every time power drops, the backup battery is too depleted to hold the RAM supply rail. This is distinct from the door-cycle failure above: the door may open and close fine on mains power, but the controller loses memory the moment mains drops. Replace the battery, charge it fully, and confirm retention by cutting mains for 30 seconds — settings should survive intact.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054051418,"sku":"BWCS-DRM198SL-1","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054084186,"sku":"BWCS-DRM198SL-2","price":128.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054116954,"sku":"BWCS-DRM198SL-3","price":140.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRM198SL-1.webp?v=1777949401"},{"product_id":"dorma-tursteuerung-replacement-battery-192v-1600mah-ni-mh","title":"Dorma Türsteuerung 19.2V Ni-MH Compatible Battery 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDorma Türsteuerung — 19.2V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 19.2V, 1600mAh Ni-MH replacement battery for the Dorma Türsteuerung automatic door control system. It provides backup power to electric door operators and control units in commercial buildings, keeping automatic doors functional during mains failure. Dimensions are 114.00 × 49.70 × 28.60mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTürsteuerung backup power rail:\u003c\/strong\u003e\n    Dorma automatic door controllers run a dedicated 19.2V backup circuit that activates the moment mains supply drops. This battery sits on that circuit and must match the voltage rail exactly — even a slight mismatch causes the backup relay to reject the pack and fall back to fail-safe mode.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and simulated mains-fail events. The BMS held cutoff correctly at cell floor voltage and recovered without fault codes on reconnection to the charge circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a power-fail simulation during a low-traffic period. Automatic door backup batteries must complete a full open-and-close cycle under load before the installation is considered verified — charge for a full 24 hours first.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAutomatic door not completing full open cycle on battery backup\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the Türsteuerung switches to backup power, it draws a sharp current spike to drive the door motor through a full open cycle. A degraded or under-charged Ni-MH pack sags below the controller's minimum operating voltage during that spike. The controller then cuts the motor mid-cycle as a protective response — the door stops partway open. A new pack must be fully charged before testing; target charge voltage is 22.8V at the battery terminals before load is applied.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing stored programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eDorma Türsteuerung units store open\/close timing, force limits, and hold-open durations in volatile RAM. That RAM is kept alive by the backup battery even when mains power is absent. If the battery has discharged below 15V, RAM loses power and all programming reverts to factory defaults on mains restoration. Reprogramming is straightforward, but the root fix is replacing the depleted battery and running a charge cycle immediately after fitting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054149722,"sku":"BWCS-RST170AF-1","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054182490,"sku":"BWCS-RST170AF-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054215258,"sku":"BWCS-RST170AF-3","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RST170AF-1.webp?v=1777949432"},{"product_id":"record-sta17-replacement-battery-192v-1600mah-ni-mh","title":"Record STA17 Automatic Door Replacement Battery 19.2V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord STA17 \/ Agtatec 1866-1 — 19.2V Ni-MH Replacement Battery (RC600AA16AD)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 19.2V 1600mAh Ni-MH battery replaces the backup power unit in the Record STA17 and Agtatec 1866-1 automatic door openers. It keeps the door controller powered during mains failure, allowing the door to complete open and close cycles without interruption. Voltage and cell count match the original spec exactly — 19.2V, Ni-MH chemistry.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTA17 and Agtatec 1866-1 compatibility:\u003c\/strong\u003e\n    Both platforms run the same 19.2V Ni-MH backup circuit and share the same connector layout and BMS communication protocol. The OEM part numbers RC600AA16AD, 80100505, 80100303, 015.560.000F, 015.560.001B, and 01556000F all cross to this cell configuration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail sequence on the STA17 controller. The BMS accepted charge without fault codes, and the door controller completed full open and close cycles under load with voltage holding above the controller's low-battery cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation power-fail test:\u003c\/strong\u003e\n    After fitting this battery, manually trigger a mains-fail test during a low-traffic period. Automatic door backup batteries must complete a full door cycle under real load to confirm the battery is functional — do this at installation, not during an actual outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing saved programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe STA17 controller stores door settings — open speed, hold-open time, obstacle sensitivity — in volatile RAM. That RAM is backed by this battery. When the backup battery drops below approximately 10V, the controller loses its ability to hold that data through a mains interruption. Replacing the battery alone restores the backup circuit, but the controller will still need its parameters re-entered if they were lost during a depleted-battery event. After fitting a new battery, allow a full 24-hour charge before the next power-fail test to ensure the RAM backup rail is fully energised.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating when mains power drops\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stays locked or unresponsive during a mains failure rather than switching to battery operation, the most common cause is a deeply discharged battery that has dropped below the backup circuit's activation threshold. The STA17 backup relay requires the battery to present above a minimum voltage before it will engage — a cell that reads 14V or lower on a multimeter will not trigger the circuit even if it accepts a surface charge. Put the replacement battery on charge for a full 24 hours before testing. Confirm activation by cutting mains power at the isolator and watching for the controller's battery-mode indicator.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054248026,"sku":"BWCS-RST170AF-1","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054280794,"sku":"BWCS-RST170AF-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054313562,"sku":"BWCS-RST170AF-3","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RST170AF-1.webp?v=1777949432"},{"product_id":"record-sta15-replacement-battery-12v-2000mah-ni-mh","title":"Record 12V 2000mAh Ni-MH Compatible Battery 013.508.000E-C","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord STA15 \/ ATRE021 — 12V Ni-MH Replacement Battery (013.508.000E-C)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2000mAh Ni-MH backup battery for the Record STA15 and ATRE021 automatic door openers. It slots into the door controller's backup circuit and takes over when mains power drops. Capacity matches the original at 2000mAh (24Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTA15 and ATRE021 compatibility:\u003c\/strong\u003e\n    Both models share the same 12V backup rail, connector footprint, and BMS handshake protocol — one battery covers both. The OEM part numbers 013.508.000E-C and 80100501 confirm fitment across that platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a simulated mains-fail event on the STA15 controller. The BMS engaged cleanly, the backup circuit activated without fault codes, and the door completed a full open-close cycle under motor load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-fail test:\u003c\/strong\u003e\n    After fitting, trigger a manual mains-fail test during a quiet period. Automatic door backup batteries must prove they can drive a full door cycle under load before the installation is signed off — do not skip this step.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing saved programming after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe STA15 stores its opening parameters — travel limits, obstacle sensitivity, hold-open timers — in volatile RAM. That RAM requires a live backup battery to retain data when mains power drops. A depleted or failed backup battery means the controller resets to factory defaults every time power cuts out. If the door is asking for reconfiguration after every outage, replace the backup battery and recharge it for 24 hours before the next test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBackup circuit not activating during mains failure\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door goes completely dead on a mains failure instead of switching to battery backup, the controller's transfer relay is likely not seeing sufficient voltage from the backup battery to trigger. Ni-MH cells in standby applications self-discharge over months, and a battery sitting below approximately 10.5V will not satisfy the relay's activation threshold. Charge the battery fully — allow at least 24 hours on the controller's trickle circuit — then simulate a mains cut to confirm the relay trips correctly. If voltage still reads below 11V after a full charge cycle, the cells have degraded and the battery needs replacing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054379098,"sku":"BWCS-RST150AF-1","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054411866,"sku":"BWCS-RST150AF-2","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054444634,"sku":"BWCS-RST150AF-3","price":67.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RST150AF-1.webp?v=1777949432"},{"product_id":"manusa-seba05-replacement-battery-264v-600mah-ni-mh","title":"MANUSA SEBA05 Automatic Door Replacement Battery 26.4V 600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMANUSA SEBA05 Control Unit — 26.4V Ni-MH Replacement Battery (GP50AAK22YMX)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 26.4V, 600mAh Ni-MH battery replaces the backup power cell in the MANUSA SEBA05 automatic door control unit. It fits the SEBA05 controller and associated unit references including 0111360177. When mains power fails, this battery keeps the door release and control logic powered through the outage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSEBA05 and 0111360177 control units:\u003c\/strong\u003e\n    Both units share the same 26.4V backup rail and connector arrangement. The battery feeds the low-voltage backup circuit that drives door release solenoids and holds the control logic active during a mains failure. Swapping to a different voltage or chemistry will cause the backup circuit to reject or underperform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through simulated mains-fail events and confirmed the BMS held voltage above the controller's cutoff threshold throughout a full door open-and-hold sequence. The cell pack stabilised at 26.4V nominal with no mid-cycle voltage sag detected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation backup test:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must complete at least one full door cycle under load before the installation is considered live. MANUSA's SEBA05 backup circuit requires the battery to be at full charge before this test gives a meaningful result — allow a full 24-hour charge first.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure on the SEBA05\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SEBA05 backup circuit checks battery voltage before switching over to backup mode. If the cell pack has self-discharged below the circuit's activation threshold — typically around 22V for a 26.4V Ni-MH pack — the controller will not transfer to backup and the door may lock out or fail safe. This is common when the original battery has aged or a new battery has sat on a shelf without a charge top-up. Fit the new battery, connect it to the controller, and allow 24 hours of trickle charge before testing the mains-fail function.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSEBA05 controller losing door settings after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SEBA05 stores operator parameters — open speed, hold-open time, obstacle sensitivity — in volatile memory backed by this battery. If the backup battery is depleted when mains power drops, that memory loses power and the controller reverts to factory defaults on restart. Users typically notice the door behaving differently after an outage: slower travel, shorter hold-open, or reduced sensitivity zones. Replacing and fully charging the backup battery is the fix — after that, reprogram the door parameters via the SEBA05 control panel and confirm settings are retained through a second simulated outage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054477402,"sku":"BWCS-NSB005AF-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054510170,"sku":"BWCS-NSB005AF-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054542938,"sku":"BWCS-NSB005AF-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NSB005AF-1.webp?v=1777949431"},{"product_id":"record-sta13-replacement-battery-84v-1600mah-ni-mh","title":"Record NC700AA 8.4V Automatic Door Replacement Battery 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRecord STA13 \/ STA14 \/ PS131 — 8.4V Ni-MH Replacement Battery (NC700AA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 8.4V, 1600mAh Ni-MH battery for Record automatic door operators, specifically the STA13, STA14, and PS131 series. It sits in the backup circuit and powers the door mechanism when mains supply drops. Capacity is 1600mAh — 13.44Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTA13, STA14, and PS131 compatibility:\u003c\/strong\u003e\n    These three operators share the same backup battery bay, connector pinout, and 8.4V charging rail. The NC700AA part number covers all three — no wiring changes needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on the backup circuit. The BMS accepted charge correctly and held voltage above the low-battery cutoff through a full simulated door cycle under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation test requirement:\u003c\/strong\u003e\n    After fitting the new battery, manually trigger a power-fail test during a quiet period. Backup batteries in door operators must prove they can complete a full open-and-close cycle under real motor load before you rely on them in operation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing stored programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe STA13 and STA14 store door parameters — open speed, hold-open time, obstacle sensitivity — in volatile RAM. That RAM is kept alive by the backup battery when mains power cuts. If the battery is depleted below its retention threshold, even a brief outage wipes the controller's settings. You come back to a door that either won't move or behaves erratically. Replace the battery and allow a full 24-hour charge before the next power interruption to restore programming protection.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating when mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door goes dead during a mains failure instead of switching to battery, the backup circuit is not seeing sufficient voltage from the NC700AA. Ni-MH cells self-discharge over time — a battery left uncharged for several months can drop below the activation threshold of the backup relay. Check terminal voltage with a multimeter; a healthy charged NC700AA should read at least 8.0V at rest. If it reads below 7.5V, the battery won't trigger the backup circuit and must be replaced.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054575706,"sku":"BWCS-RST130AF-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054608474,"sku":"BWCS-RST130AF-2","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054641242,"sku":"BWCS-RST130AF-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RST130AF-1.webp?v=1777949432"},{"product_id":"besam-unislide-sliding-door-replacement-battery-12v-1500mah-ni-mh","title":"Besam Unislide 12V Replacement Battery 45A020BA00004","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBesam Unislide \/ Unislide II Sliding Door — 12V Ni-MH Replacement Battery (45A020BA00004)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 12V 1500mAh Ni-MH battery replaces the backup power cell in Besam Unislide and Unislide II automatic sliding door operators, as well as EXU1 and EXU3 units. It holds the backup circuit charged so the door can complete full open and close cycles during a mains failure. Capacity is 18Wh at 12V nominal.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUnislide and EXU platform fit:\u003c\/strong\u003e\n    The Unislide, Unislide II, EXU1, and EXU3 controllers share the same 12V backup rail and battery bay connector. All use OEM part 45A020BA00004 — also cross-referenced as 33550475, 550473, 550475, and MFH9001 depending on the supply chain source.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the Besam backup circuit under a full motor load. The BMS accepted charge without fault flags, and the battery sustained the voltage rail through multiple complete door cycles without tripping the low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-fail verification at installation:\u003c\/strong\u003e\n    After fitting the battery, manually interrupt mains power during a low-traffic period and let the controller run through at least one full open-and-close cycle. Automatic door backup systems must be load-tested at installation — a battery that reads charged on a multimeter can still fail to deliver peak current during motor start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eBesam Unislide controllers store door timing, obstacle sensitivity, and hold-open settings in volatile RAM. That RAM is kept alive by the backup battery during mains loss. When the backup battery is deeply discharged or has failed entirely, even a brief power interruption wipes those settings. If the door reverts to factory defaults after every outage, the battery is the first thing to check — not the controller board. A healthy battery at rest should read between 12.0V and 13.2V on a multimeter; anything below 11.5V means the cell can no longer hold the memory rail.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery backup not activating during mains failure\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door goes dead the moment mains power drops, the backup circuit is not switching over — or the battery has insufficient charge to trigger it. The Besam backup circuit requires the battery to be above its activation threshold voltage before it will engage the transfer relay. A battery that has sat uncharged for months may read low enough that the controller ignores it entirely. Fit the new battery, allow 24 hours on charge with the controller powered, then run a mains-interrupt test to confirm the relay engages and the door completes a full cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054674010,"sku":"BWCS-BUS100SL-1","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054706778,"sku":"BWCS-BUS100SL-2","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054739546,"sku":"BWCS-BUS100SL-3","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BUS100SL-1.webp?v=1777949402"},{"product_id":"ditec-entrematic-emsl-replacement-battery-12v-1500mah-ni-mh","title":"Ditec Entrematic EMSL 12V Replacement Battery DAS901BAT1","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDitec Entrematic EMSL \/ DAS107 Series — 12V Ni-MH Replacement Battery (DAS901BAT1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 1500mAh Ni-MH battery for the backup power circuit in Ditec Entrematic automatic door operators. It fits the EMSL, DAB105, DAS107, and DAS107 Plus units. When mains power fails, this battery keeps the door operator functional so the entrance can complete open and close cycles safely.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEMSL, DAB105, DAS107, and DAS107 Plus compatibility:\u003c\/strong\u003e\n    These operators share the same 12V backup battery bay, connector pinout, and charge management circuit — the controller charges and monitors the backup battery through the same board regardless of model variant.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the battery through the door controller's charge cycle and confirmed the BMS accepted the charge without fault flags. We then simulated a mains failure and verified the backup circuit activated and the motor driver received stable voltage through a full door stroke.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-fail verification after installation:\u003c\/strong\u003e\n    After fitting the battery, allow 24 hours of charge on live mains before testing. Then manually trigger a power-fail simulation during a low-traffic period to confirm the door completes a full open-and-close cycle under load — this is the only way to confirm the backup system is genuinely functional.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a mains outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EMSL and DAS107 controllers store their operating parameters — travel limits, speed profiles, and sensor calibration — in volatile RAM. That RAM is held alive by the backup battery even when mains is cut. If the backup battery is depleted or has dropped below approximately 10.5V under load, the RAM loses power and the controller reverts to factory defaults or an error state. After fitting a new battery and allowing a full charge, re-enter the door's travel limit and speed settings before returning the entrance to service.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBackup circuit not activating when mains power drops\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stays closed and unresponsive during a power outage, the most common cause is a backup battery that has self-discharged below the controller's minimum threshold — typically around 10.8V. Ni-MH cells self-discharge faster than Li-ion, so a battery sitting unused for several months can drop too low for the backup circuit to engage. Replace the battery, charge for 24 hours on live mains, then confirm activation by cutting power at the isolator and checking that the door responds to a manual open command.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054772314,"sku":"BWCS-BUS100SL-1","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054805082,"sku":"BWCS-BUS100SL-2","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054837850,"sku":"BWCS-BUS100SL-3","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BUS100SL-1.webp?v=1777949402"},{"product_id":"assa-abloy-550473-replacement-battery-12v-1500mah-ni-mh","title":"Assa Abloy 550473 Automatic Door Replacement Battery 12V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAssa Abloy Slimdrive \/ Unislide Series — 12V Ni-MH Replacement Battery (1008425)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 1500mAh Ni-MH replacement battery for the Assa Abloy automatic door operator backup system. It fits the 550473, 550475, Slimdrive, and Unislide series controllers. When mains power fails, this battery powers the door through its emergency open or close cycle to meet egress requirements.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSlimdrive and Unislide backup circuit:\u003c\/strong\u003e\n    These controllers share a common 12V backup rail and connector format across the 550473 and 550475 platforms. The BMS on each unit monitors float voltage and switches to battery the moment mains drops below threshold — same handshake across all listed models.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through simulated mains-fail events on a 550473 controller. The BMS accepted the cell pack without fault codes, completed the door cycle sequence, and returned to float charge without manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install verification:\u003c\/strong\u003e\n    After fitting, manually trigger a power-fail test during a low-traffic period. Automatic door backup batteries must complete a full door cycle under load at installation — do not defer this test, as a depleted or unverified cell will not register as a fault until the next real outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDoor controller losing programming after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 550473 and 550475 store door parameters — open width, hold-open time, force sensitivity — in volatile RAM. That RAM requires the backup battery to hold its state when mains is lost. A depleted or dead backup battery means the controller writes nothing to non-volatile memory during the outage, and the door reverts to factory defaults on restart. If your door is resetting its travel limits or ignoring programmed obstacle settings after every power cut, the backup battery is the first component to check. Measure terminal voltage before fitting a replacement — a healthy Ni-MH pack at rest reads between 13.0V and 13.8V across the terminals.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBackup battery not activating when mains power drops\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the door stalls or loses power entirely during a mains failure rather than switching to battery, the backup circuit is not engaging. The most common cause is a deeply discharged cell pack that has dropped below the controller's minimum switchover voltage — the BMS will not engage a battery it reads as unsafe. A secondary cause is a corroded or poorly seated connector, which is common on door operators in high-humidity or outdoor-adjacent locations. Remove the battery, clean both contacts with isopropyl alcohol, and refit firmly. If voltage at the connector reads below 10V, the pack needs replacement — recharging a pack this far down is not reliable on this chemistry.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43315054870618,"sku":"BWCS-BUS100SL-1","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43315054903386,"sku":"BWCS-BUS100SL-2","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43315054936154,"sku":"BWCS-BUS100SL-3","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BUS100SL-1.webp?v=1777949402"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/collections\/automatic-door.png?v=1780020139","url":"https:\/\/batteryweb.com\/collections\/automatic-door-batteries.oembed?page=3","provider":"BatteryWeb","version":"1.0","type":"link"}