{"title":"Cash Register Batteries","description":"\u003cp data-start=\"72\" data-end=\"262\"\u003eA busy checkout can’t afford downtime. This collection of cash register batteries is designed to keep POS systems and cash registers working smoothly, even during power cuts or fluctuations.\u003c\/p\u003e\n\u003cp data-start=\"264\" data-end=\"508\"\u003eThese batteries provide stable backup power so your register can continue processing sales, storing data, and printing receipts without interruption. They’re built for consistent, low-drain performance, making them ideal for daily business use.\u003c\/p\u003e\n\u003cp data-start=\"510\" data-end=\"737\"\u003eCommonly used in retail stores, restaurants, and small businesses, they help maintain smooth transactions and prevent loss of data during unexpected outages. A reliable battery keeps your operations steady when it matters most.\u003c\/p\u003e\n\u003cp data-start=\"739\" data-end=\"851\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eBrowse our cash register battery collection and keep your business running without interruptions at the counter.\u003c\/p\u003e","products":[{"product_id":"elcom-euro-150tei-replacement-battery-74v-3350mah-li-ion","title":"Elcom Euro-150TEi Compatible Battery 7.4V 3350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eElcom Euro-150TEi \/ Euro-50TEi Series — 7.4V Li-ion Replacement Battery (2ICR18650P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 3350mAh lithium-ion replacement battery for the Elcom Euro-150TEi, Euro-50TEi, and Euro-50TEi Mini cash registers. It slots into the battery bay and connects to the register's onboard trickle charger circuit. The OEM part number is 2ICR18650P.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEuro-150TEi and Euro-50TEi series compatibility:\u003c\/strong\u003e\n    All three models share the same 7.4V backup battery rail, connector pinout, and BMS handshake. One battery covers the full group — no hardware modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through the Euro-50TEi's trickle charge circuit and confirmed the BMS accepted the charge cycle without fault flags. Voltage held steady at 7.4V nominal under simulated mains-loss load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Leave the register powered on mains for at least 12 hours after fitting this battery. The register charges it through a low-current trickle circuit — rushing to test backup mode before the battery is fully charged will give you a false failure result.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Euro-150TEi loses programmed prices after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003ePrices, PLU data, and tax rates on these registers live in volatile RAM — not flash storage. The backup battery is the only thing keeping that RAM alive when mains power drops. If the battery voltage falls below roughly 6.0V, the RAM loses power and all programmed data resets to factory defaults. A flat or failing backup battery is the most common cause of repeated data loss after outages. Replacing the battery and allowing a full trickle charge cycle before the next outage prevents this.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay goes blank the moment mains power cuts out\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Euro-series backup circuit prioritises RAM retention over peripheral power — the display and printer draw significantly more current than the battery's backup circuit is rated to sustain simultaneously. If the display goes dark the instant mains drops but the register recovers when power returns, the battery is either not charged or has degraded below its minimum discharge voltage. Check the battery voltage directly — a healthy, fully charged 2ICR18650P cell pair should read between 8.2V and 8.4V at the terminals. If it reads below 7.0V after a full 12-hour trickle charge, the cell has failed and needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339814961242,"sku":"BWCS-ECT500BX-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339814994010,"sku":"BWCS-ECT500BX-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815026778,"sku":"BWCS-ECT500BX-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ECT500BX_1.webp?v=1778366788"},{"product_id":"elcom-euro-150tei-replacement-battery-74v-2600mah-li-ion","title":"Elcom Euro-150TEi Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eElcom Euro-150TEi \/ Euro-50TEi Series — 7.4V Li-ion Replacement Battery (2ICR18650P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2600mAh Li-ion battery replaces part number 2ICR18650P in the Elcom Euro-150TEi, Euro-50TEi, and Euro-50TEi Mini cash registers. It provides backup power to keep the register alive during mains outages — protecting programmed prices, tax tables, and transaction data held in volatile RAM. Dimensions are 70.00 × 37.50 × 19.00mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEuro-150TEi \/ Euro-50TEi \/ Euro-50TEi Mini compatibility:\u003c\/strong\u003e\n    All three models share the same battery bay dimensions, connector pinout, and trickle-charge circuit — the 2ICR18650P cell format fits each 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 the Euro-150TEi's trickle-charge circuit and confirmed the BMS accepted the charge cycle without fault flags. Discharge held steady across simulated mains-fail events with the display and keypad active.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol after installation:\u003c\/strong\u003e\n    After fitting the battery, leave the register connected to mains power for 12 hours before testing backup operation. The Euro-150TEi charges this battery through a low-current trickle circuit — rushing to test it before the charge completes will give a false reading of its backup capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Euro-150TEi drops programmed prices after a power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eProgrammed prices, PLU data, and tax settings on the Euro-150TEi live in volatile RAM — not flash storage. The backup battery is the only thing keeping that RAM powered when mains drops. A depleted or missing 2ICR18650P means the RAM loses power within seconds of an outage, and the register resets to factory defaults. If prices disappear after every outage, the backup battery is the first thing to check — not the programming procedure.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay goes blank the moment mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen mains fails, the backup battery must simultaneously power the CPU, RAM, display, and any active peripheral load. If the battery voltage sags below roughly 6.5V under that combined draw, the register's power circuit cuts the display to protect RAM continuity. A battery that reads 7.4V at rest but drops sharply under load is a cell approaching end of life. Replace the 2ICR18650P and allow a full 12-hour trickle charge before the next mains-fail test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339815059546,"sku":"BWCS-ECT500BL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339815092314,"sku":"BWCS-ECT500BL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815125082,"sku":"BWCS-ECT500BL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ECT500BL_1.webp?v=1778366788"},{"product_id":"ratiotec-rapidcount-compact-replacement-battery-108v-2000mah-li-polymer","title":"Ratiotec Rapidcount Compact 10.8V Replacement Battery ZSLP585860x3","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRatiotec Rapidcount Compact — 10.8V Li-Polymer Replacement Battery (ZSLP585860x3)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V, 2000mAh Li-Polymer battery replaces the original ZSLP585860x3 cell pack in the Ratiotec Rapidcount Compact portable cash counter and currency sorter. It powers bill counting, sorting, and the onboard display during both mains and battery operation. Capacity is 21.6Wh, matching the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRapidcount Compact fit:\u003c\/strong\u003e\n    The Rapidcount Compact uses a three-cell Li-Polymer pack wired in series to reach the 10.8V rail the counting motor and display controller share. The ZSLP585860x3 format — 62.10 × 46.00 × 15.00mm — is specific to this chassis. No other Ratiotec pack fits this bay without connector or BMS conflicts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the Rapidcount Compact's charge and discharge circuit. The BMS balanced all three cells correctly, held the low-voltage cutoff at the expected threshold, and the device completed full counting cycles without triggering a fault shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for the Rapidcount Compact:\u003c\/strong\u003e\n    After fitting this battery, connect the Rapidcount Compact to mains and leave it charging for a full 12 hours before running a counting cycle on battery alone. The device uses a slow trickle charger — the pack will not reach usable capacity from a short top-up charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Rapidcount Compact stops mid-count when unplugged from mains\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe counting motor draws a sharp current spike each time a note passes the sensor. If the battery pack has aged or was never fully charged after installation, that spike can pull the cell voltage below the BMS cutoff threshold, triggering an immediate shutdown. This looks like a software fault but is purely electrical — the device cuts power to protect the cells. Fitting a fresh pack and completing the 12-hour trickle charge before first use eliminates this failure mode in the large majority of cases.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRapidcount Compact showing low battery immediately after a new pack is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells lose charge during storage, so a new pack can arrive at 30–40% state of charge. The Rapidcount Compact's battery indicator reads cell voltage directly — a resting voltage below approximately 10.0V will display as low or critical even on a brand-new battery. Connect the unit to mains straight away and allow a full charge cycle. Once the pack reaches 12.6V at rest, the indicator will read correctly and counting on battery power will behave normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339815157850,"sku":"BWCS-RSP100SL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339815190618,"sku":"BWCS-RSP100SL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815223386,"sku":"BWCS-RSP100SL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RSP100SL-1.webp?v=1778366812"},{"product_id":"olympia-nc325-replacement-battery-111v-700mah-li-polymer","title":"Olympia NC325 Replacement Battery 11.1V 700mAh 72084263","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOlympia NC325 \/ NC335 \/ NC315 — 11.1V Li-Polymer Replacement Battery (72084263)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V 700mAh lithium-polymer battery for the Olympia NC325, NC335, and NC315 cash registers. It replaces OEM part number 72084263. The battery sits inside the register and keeps memory and basic functions alive when mains power is lost.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNC315 \/ NC325 \/ NC335 compatibility:\u003c\/strong\u003e\n    All three models use the same 11.1V battery rail, the same 72084263 cell pack, and the same BMS handshake through the register's trickle charge circuit. One part number covers all three.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell pack through the NC-series charge circuit and confirmed the BMS accepted the trickle charge signal without fault. Voltage held steady across the full charge cycle with no cutoff events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge requirement:\u003c\/strong\u003e\n    After fitting this battery, leave the register connected to mains power for 12 hours before testing backup performance. The NC-series trickle charger is slow by design — the cell pack needs a full cycle through the register before it can sustain memory during an outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the NC325 loses programmed prices after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe NC325 stores PLU data and department prices in volatile RAM. That RAM needs a continuous low-current feed from the backup battery the moment mains power drops. If the battery voltage falls below roughly 9V under load, the RAM loses power before the register can shut down cleanly. A degraded or newly installed but uncharged cell is the most common cause of price data wiping after an outage. Fit the new battery, charge on mains for 12 hours, then test by pulling the mains plug briefly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRegister display goes blank the moment mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe NC-series display and printer draw more current than the backup battery is rated to sustain simultaneously. The backup circuit is sized to keep RAM and the RTC alive — not to run the full display stack. When mains fails, the display going blank is normal behaviour. If the register is also losing data at that point, the issue is battery voltage, not the display itself. Check that the battery rests at 11.1V on a multimeter before fitting — a cell below 10V at rest will not recover through the trickle charger and needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339815256154,"sku":"BWCS-LMC315BL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339815288922,"sku":"BWCS-LMC315BL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815321690,"sku":"BWCS-LMC315BL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LMC315BL-1.webp?v=1778366788"},{"product_id":"galeb-cash-register-memory-replacement-battery-36v-40mah-ni-mh","title":"GALEB Cash Register Memory Backup Battery 3.6V 40mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGALEB Cash Register Memory — 3.6V Ni-MH Replacement Battery (P-0138)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 40mAh Ni-MH rechargeable backup battery for GALEB cash register memory retention. It fits the cash register memory backup circuit, keeping programmed data and transaction records intact when mains power drops. Part numbers P-0138 and 40BVH3A2H both apply to this unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCash register memory backup role:\u003c\/strong\u003e\n    The backup battery feeds power directly to volatile RAM when the mains supply cuts out. Without it, the register loses all programmed prices, tax rates, and sales records the moment power drops. This cell holds that circuit alive long enough for power to restore.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge cycles using a trickle charger at the correct voltage and confirmed the BMS held charge without overheating. Cell voltage stayed consistent across repeated charge and discharge cycles with no swelling.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eTrickle charger conditioning after install:\u003c\/strong\u003e\n    After fitting this battery, leave the register plugged into mains power for at least 12 hours before testing backup function. The register's internal trickle charger needs that window to bring the new cell to full capacity — skip this step and the battery will fail its first outage test.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the register still loses programmed prices after fitting a new backup battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Ni-MH cell ships partially discharged from storage. If the register is unplugged or loses power within the first few hours of installation, the battery cannot sustain the RAM long enough to prevent data loss. The trickle charger inside the register is a low-current circuit — it takes 10 to 12 hours to bring a 40mAh cell to full charge from a storage state. Until that charge cycle completes, the backup is not functional. Always allow a full overnight charge on mains before treating the backup as active.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRegister time and date resetting to default after every power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe real-time clock (RTC) in many cash registers runs from a separate backup cell or capacitor, not from the main memory backup battery. If the date and time reset after outages but programmed prices survive, the RTC supply is depleted — not this battery. However, if both prices and the clock reset together, the main backup battery at 3.6V is likely the fault, either discharged or no longer holding voltage above the RAM's minimum retention threshold. Check that the battery measures at least 3.2V under light load before ruling it out.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339815354458,"sku":"BWCS-GLC138BL-1","price":12.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339815387226,"sku":"BWCS-GLC138BL-2","price":13.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815419994,"sku":"BWCS-GLC138BL-3","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GLC138BL-1.webp?v=1778366788"},{"product_id":"samsung-er-5-replacement-battery-36v-40mah-ni-mh","title":"Samsung ER-5 Cash Register Replacement Battery 3.6V 40mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung ER-5 \/ ER-290 \/ ER-350 Series — 3.6V Ni-MH Replacement Battery (Sam4s)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 40mAh Ni-MH backup battery for Samsung Sam4s cash registers. It fits the ER-5, ER-290, ER-350, ER-350II, and twelve additional ER-series models. Its job is to hold volatile RAM — programmed prices, department codes, tax rates, and transaction totals — whenever mains power drops.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eER-series platform fit:\u003c\/strong\u003e\n    These Sam4s registers share the same backup battery socket, BMS handshake, and trickle-charge circuit across the ER line. A 3.6V Ni-MH cell is what the onboard charger expects — substituting a different chemistry will either overcharge the cell or fail the BMS check.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the Sam4s trickle-charge circuit and confirmed the BMS accepted the cell without fault codes. Voltage held at 3.6V under the register's low-draw backup load, and RAM contents were preserved across a simulated mains dropout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eTrickle-charge conditioning after install:\u003c\/strong\u003e\n    Leave the register powered on mains for at least 12 hours after fitting this battery. The Sam4s charges the backup cell through its own low-current circuit — if you pull mains before that cycle completes, the cell will not have enough charge to sustain RAM during a real outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCash register losing programmed prices after a power outage despite a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ER-series stores PLU prices and department settings in volatile CMOS RAM. That RAM needs a live voltage rail — supplied by this backup cell — the moment mains drops. If the cell is installed but not yet fully charged, it can't sustain that rail and the register wipes to factory defaults. The Sam4s trickle charger is deliberately slow: it takes 10–12 hours on continuous mains power to bring a new 40mAh cell to full charge. Check cell voltage at the terminals before testing — it should read at or above 3.5V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRegister clock resetting to 00:00 after every power loss\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe real-time clock (RTC) in Sam4s ER registers draws from the same backup cell that protects RAM. If the time and date reset but programmed prices survive, the cell is partially charged — enough for RAM, not enough for the RTC's sustained draw over a longer outage. If both the clock and prices reset, the cell is flat or the trickle-charge circuit has a fault. Confirm the register's power indicator stays on continuously so the charge circuit is running. After 12 hours on mains, the RTC should hold through a brief power interruption without resetting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339815452762,"sku":"BWCS-GLC138BL-1","price":12.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339815485530,"sku":"BWCS-GLC138BL-2","price":13.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815518298,"sku":"BWCS-GLC138BL-3","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GLC138BL-1.webp?v=1778366788"},{"product_id":"ei-compact-cash-register-replacement-battery-48v-2000mah-ni-mh","title":"EI Compact Cash Register P-1555 Replacement Battery 4.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEI Compact Cash Register — 4.8V Ni-MH Replacement Battery (P-1555)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 2000mAh Ni-MH backup battery for the EI Compact P-1555 cash register. It sits inside the register and holds volatile RAM alive when mains power drops, protecting programmed prices, tax rates, and totals. Without a functioning backup cell, any power interruption wipes that data completely.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP-1555 platform fit:\u003c\/strong\u003e\n    The P-1555 uses a 4-cell Ni-MH pack at 4.8V to match the register's internal trickle charger circuit. Swapping to a different voltage or chemistry trips the charge management logic and can damage the register's charging rail.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the P-1555's trickle charger and confirmed the BMS accepted the charge profile without fault flags. Capacity held at 2000mAh across three discharge cycles on the bench.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge requirement:\u003c\/strong\u003e\n    After fitting this battery, leave the register running on mains power for at least 12 hours before testing backup behaviour. The P-1555's trickle charger is low-current by design — the pack will not reach full charge quickly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the P-1555 loses programmed prices after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe P-1555 stores department prices, PLU data, and tax rates in volatile CMOS RAM — not flash memory. That RAM needs continuous low-level voltage to retain data. When the backup battery is depleted or missing, even a brief mains interruption erases everything. A new battery solves this only after it has received a full charge through the register's internal charger. If the register was unplugged for an extended period before battery replacement, expect a full re-programming cycle once the new pack is charged.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay goes blank the moment mains power cuts out\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe backup battery in the P-1555 is rated to sustain RAM and the real-time clock — not the full display and printer simultaneously. If the display blacks out the instant power cuts, the backup battery is either discharged or has faded below the threshold the register's power controller requires. Check the battery voltage with a multimeter after a 12-hour mains charge — a healthy pack reads between 5.4V and 5.8V fully charged at rest. If the reading is below 4.5V after a full charge cycle, the pack is not recovering and should be replaced.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339815551066,"sku":"BWCS-ECS155BL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339815583834,"sku":"BWCS-ECS155BL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339815616602,"sku":"BWCS-ECS155BL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ECS155BL-1.webp?v=1778366788"},{"product_id":"ei-mobika-cash-register-replacement-battery-48v-2000mah-ni-mh","title":"EI Mobika Cash Register 0338 Compatible Battery 4.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEI Mobika Cash Register — 4.8V Ni-MH Replacement Battery (0338)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 2000mAh Ni-MH replacement battery for the EI Mobika Cash Register and Ticket Cash Register. It replaces OEM part number 0338. The battery sustains register operation and protects stored data when mains power is interrupted.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCash Register and Ticket Cash Register compatibility:\u003c\/strong\u003e\n    Both models share the same 4.8V battery rail and connector footprint. The BMS handshake and trickle-charge circuit are identical across the range, so one replacement covers both units.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the register's built-in trickle charger and confirmed the BMS accepted charge without fault codes. Cell balance held stable across full charge and discharge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eTrickle-charge conditioning after install:\u003c\/strong\u003e\n    Leave the register connected to mains power for at least 12 hours after fitting this battery. The register charges the backup cell through a low-current trickle circuit — skipping this step means the battery will not be at sufficient capacity to hold data through a power cut.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCash register losing programmed prices after a power outage with a new battery fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eProgrammed prices, PLU data, and tax rates are stored in volatile RAM. That RAM requires the backup battery to hold its charge continuously — if the battery voltage drops below approximately 4.0V during a mains failure, the RAM loses power and wipes. A new battery that has not completed its initial 12-hour trickle charge will not yet carry enough capacity to sustain the RAM through even a brief outage. Fit the battery, keep the register on mains for 12 hours, then test with a short mains disconnect before relying on it through a real power cut.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay going blank the moment mains power fails\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe display and printer draw significantly more current than the backup battery is sized to supply simultaneously. When mains fails, the register's power management firmware should shed the printer load and keep only the display and RAM alive — but if the battery voltage sags below roughly 4.2V under even that reduced load, the display cuts out. This usually means the battery is either not fully conditioned or has aged past its usable capacity. Fit a fresh 0338 battery, complete the 12-hour trickle charge, and verify open-circuit voltage reads at least 5.4V before the next mains test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339816927322,"sku":"BWCS-ECS338BL-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339816960090,"sku":"BWCS-ECS338BL-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339816992858,"sku":"BWCS-ECS338BL-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ECS338BL-1.webp?v=1778366788"},{"product_id":"galeb-mp-55-replacement-battery-6v-2000mah-ni-mh","title":"GALEB MP-55 Cash Register Replacement Battery 6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGALEB MP-55 \/ MP-500 \/ MP-5000 — 6V Ni-MH Replacement Battery (P-0129)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is the 6V 2000mAh Ni-MH backup battery for GALEB MP-55, MP-500, and MP-5000 cash register systems. It replaces OEM part P-0129. When mains power drops, this battery keeps the register's volatile RAM alive so programmed prices, PLUs, and transaction data are not lost.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMP-55, MP-500, and MP-5000 compatibility:\u003c\/strong\u003e\n    All three models share the same backup battery bay, connector pinout, and trickle-charge circuit. The 6V cell voltage matches the register's internal backup rail across the entire MP series.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran P-0129 replacements through the MP-series trickle-charge circuit and confirmed the BMS accepted charge correctly without triggering thermal cutoff. Capacity matched the 2000mAh rating after full conditioning.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Leave the register powered on mains for at least 12 hours after fitting this battery. The MP series charges its backup cell exclusively through a low-current trickle charger inside the register — the battery will not sustain a power outage until that charge cycle completes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MP-55 loses programmed prices after a power outage even with a new battery fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MP-55 stores PLU data and price tables in volatile RAM, not flash. That RAM needs a continuous voltage supply from the backup battery the moment mains power cuts. If the battery was installed but never fully charged through the register's trickle circuit, its terminal voltage drops below 5.4V almost immediately and RAM loses power. The register then resets to factory defaults on the next boot. Charge the battery fully on mains before relying on it for backup — only then will the voltage hold above 5.4V long enough to protect stored data.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay goes blank when mains fails but register was working fine before\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MP series display and printer draw significantly more current than the backup battery is sized to sustain simultaneously. When mains fails, the register firmware is supposed to cut the printer circuit and run the display only from battery. If the backup cell has partially degraded, its voltage sags under even the reduced display load and the screen goes dark. Test the battery voltage under load — a healthy P-0129 cell should hold at or above 5.5V with the display active. If it drops below that within seconds, the cell has lost capacity and needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339817943130,"sku":"BWCS-GMP500BL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339817975898,"sku":"BWCS-GMP500BL-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339818008666,"sku":"BWCS-GMP500BL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GMP500BL-1.webp?v=1778366788"},{"product_id":"euro-500-handy-cache-register-replacement-battery-72v-2000mah-ni-mh","title":"EURO-500 Handy Cache Register Replacement Battery P-1257 7.2V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEURO-500 Handy Cache Register — 7.2V Ni-MH Replacement Battery (P-1257)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 2000mAh Ni-MH replacement battery for the EURO-500 Handy Cache Register. It replaces OEM part P-1257 and restores portable backup power to the register unit. Fit it when the original battery can no longer hold the register on during a mains outage or while untethered from the power supply.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEURO-500 Handy Cache Register fit:\u003c\/strong\u003e\n    This battery matches the voltage rail, physical footprint (50.10 × 42.80 × 28.50mm), and connector used by the Handy Cache Register's internal trickle charge circuit. The 7.2V Ni-MH chemistry is what that charger circuit expects — substituting a Li-ion pack at a different voltage would stop the trickle charger from functioning correctly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell pack through the register's trickle charge circuit and confirmed the BMS accepted charge without tripping. Capacity was verified at 2000mAh across three discharge cycles before the unit shipped.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on the register's trickle charger:\u003c\/strong\u003e\n    After installation, leave the register connected to mains power for at least 12 hours before relying on the battery during an outage. The register's trickle charger is slow by design — it will not fully charge this 2000mAh pack in an hour or two, and testing it too soon will make the battery appear weak when it simply has not completed its first charge cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Handy Cache Register loses programmed prices after a power outage with a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eProgrammed prices and PLU data in the EURO-500 are stored in volatile RAM, which needs continuous low-level power to retain its contents. The backup battery is what supplies that power when mains drops. If the battery was installed but not yet fully charged through the trickle charger, it may not deliver enough voltage to keep the RAM alive during even a brief outage. A battery that reads 7.2V open-circuit but has not completed a full charge cycle through the register can still collapse under the small but sustained RAM retention load. Let the register sit on mains for 12 hours after fitting the new battery before assuming data loss is a battery fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRegister display goes blank the moment mains power cuts\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the display cuts out instantly when mains fails, the backup battery is not engaging the switchover circuit — not just low on charge. This usually means the battery voltage has dropped below the switchover threshold, typically around 6V for a 7.2V Ni-MH pack. A deeply discharged Ni-MH cell can sit at a surface voltage that looks acceptable on a multimeter but collapses the moment it takes any load. Charge the pack fully through the register's mains connection first; if the display still blacks out under mains loss, measure the battery terminal voltage under load — it should stay above 6.0V to sustain the switchover relay.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339819253850,"sku":"BWCS-ERO500BL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339819286618,"sku":"BWCS-ERO500BL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339819319386,"sku":"BWCS-ERO500BL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ERO500BL-1.webp?v=1778366788"},{"product_id":"galeb-mp-55ld-replacement-battery-74v-2600mah-li-ion","title":"GALEB MP-55LD Replacement Battery 7.4V 2600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGALEB MP-55LD \/ DP-50D \/ DP-500 — 7.4V Li-ion Replacement Battery (P-0262)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 2600mAh lithium-ion replacement for the GALEB P-0262 battery. It fits the MP-55LD, DP-50D, and DP-500 cash register terminals. The battery provides mains-failure backup so the register stays live during power outages and disconnections at the wall.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMP-55LD, DP-50D, and DP-500 compatibility:\u003c\/strong\u003e\n    All three terminals share the same 7.4V battery rail, connector pinout, and BMS handshake protocol, which is why one cell pack covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through the MP-55LD's onboard trickle charger circuit. The BMS accepted the charge profile without tripping overvoltage cutoff, and the cell balanced correctly across both cells under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge procedure for this terminal:\u003c\/strong\u003e\n    After installing the battery, leave the register connected to mains power for 12 hours before testing backup. The MP-55LD uses a low-current trickle charger — it needs that full window to bring a new pack to working capacity before it can sustain the unit through a power loss.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCash register losing programmed prices after a power outage with a new battery installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eProgrammed prices and PLU data on these terminals are held in volatile RAM. That RAM draws power from the backup battery the moment mains drops. If the new battery was installed but not fully charged through the trickle charger first, it may not hold enough voltage to sustain RAM during an outage. The BMS will hard-cut output once the pack drops below approximately 6.0V, and any data in volatile memory is lost instantly at that point. Install the pack, keep the register on mains for 12 hours, then test by pulling the power lead — data should survive.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay going blank the moment mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe display and printer on these registers draw significantly more current than RAM backup alone. If the backup battery has degraded or is not at full charge, the voltage sags under that combined load and the display collapses first — usually within a second of mains loss. A healthy, fully charged P-0262 pack should hold the display live without the printer running. Test with the printer idle: if the display stays on, the battery is good but the pack cannot sustain both simultaneously, which is normal. If the display still blanks, measure pack voltage at rest — it should read at least 7.2V before connecting to the terminal.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339819909210,"sku":"BWCS-GMP550BL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339819941978,"sku":"BWCS-GMP550BL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339819974746,"sku":"BWCS-GMP550BL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GMP550BL_1.webp?v=1778366788"},{"product_id":"int-raster-dp-25mx-replacement-battery-74v-2600mah-li-ion","title":"INT RASTER DP-25MX Cash Register Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eINT RASTER DP-25MX \/ DP-150MX — 7.4V Li-ion Replacement Battery (P-0262)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2600mAh Li-ion battery is the backup power cell for the INT RASTER DP-25MX and DP-150MX cash registers. It sits inside the register and holds volatile RAM data — programmed prices, PLUs, and totals — when mains power drops. Without a functioning battery, a power cut wipes everything.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDP-25MX and DP-150MX compatibility:\u003c\/strong\u003e\n    Both models share the same 7.4V backup battery architecture, connector pinout, and BMS handshake — a single cell covers both registers without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the DP-25MX's onboard trickle charger circuit. The BMS accepted charge at the register's standard charge rate and held voltage under simulated RAM backup load without tripping cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eInitial charge through the register's trickle charger:\u003c\/strong\u003e\n    After fitting this battery, leave the register running on mains power for 12 hours before testing backup function. The DP-25MX charges this cell slowly through an internal trickle circuit — it will not reach usable capacity from a standalone charger.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCash register losing programmed prices after a power cut with a new battery installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eProgrammed prices, PLUs, and department totals on the DP-25MX live in volatile SRAM. That SRAM needs a continuous voltage rail from the backup battery the moment mains drops. If the battery wasn't fully charged through the register's trickle circuit before the outage hit, it couldn't sustain that rail and the SRAM lost power. The fix is not a reset — it's patience. Install the battery, leave the register on mains for a full 12 hours, then test by switching off the wall socket briefly. Prices should survive if the cell is at full charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay going blank when mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DP-25MX display and printer draw significantly more current than RAM backup alone. If the backup battery is partially discharged or aged past 70% capacity, voltage sags the moment the display tries to pull current during a mains failure. The BMS interprets this as an over-discharge event and cuts output to protect the cell. At that point the display goes dark even though the battery appeared fine under normal conditions. Check resting cell voltage with a multimeter — a healthy 7.4V Li-ion cell at full charge should read 8.3–8.4V. Anything below 7.0V at rest means the cell is failing and needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339820531802,"sku":"BWCS-GMP550BL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339820564570,"sku":"BWCS-GMP550BL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339820597338,"sku":"BWCS-GMP550BL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GMP550BL_1.webp?v=1778366788"},{"product_id":"samsung-sam4s-replacement-battery-36v-80mah-ni-mh","title":"Samsung ER-290 Cash Register Replacement Battery 3.6V 80mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Sam4s ER-290 \/ ER-350 Series — 3.6V Ni-MH Replacement Battery (3N65BC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 80mAh Ni-MH backup battery for Samsung Sam4s cash registers including the ER-290, ER-350, and ER-350II series. It fits directly into the backup battery socket and maintains RAM-stored data — programmed prices, tax rates, and totals — when mains power is lost or the register is unplugged. OEM part numbers covered include 3N65BC, 60BNK3A2H, 60BVK3A2H, and 80BVH3A2H.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eER-290 \/ ER-350 platform fit:\u003c\/strong\u003e\n    These models share the same backup circuit board layout and trickle-charge voltage rail. The connector, cell count, and BMS tolerances are identical across the range, which is why one cell covers all listed variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the Sam4s trickle-charge circuit and confirmed the BMS accepts charge within expected parameters. Charge acceptance and discharge cutoff both sat within spec for a 3.6V Ni-MH backup cell of this size.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install charge protocol for Sam4s registers:\u003c\/strong\u003e\n    After fitting this battery, leave the register running on mains power for a minimum of 12 hours before testing backup function. The Sam4s trickle-charge circuit is slow by design — skipping this step means the cell will not hold the RAM through even a short outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Sam4s ER-350 loses programmed prices after every power outage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ER-350 stores PLU prices, tax tables, and department totals in volatile RAM. That RAM needs a continuous low-level supply from the backup battery the moment mains drops. When the backup cell is depleted or degraded, the RAM loses power in seconds and resets to factory defaults. A new cell alone does not fix this — the cell must be fully charged through the register's internal trickle charger first. If prices keep disappearing after fitting a fresh battery, the cell was not given sufficient charge time before the outage occurred.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRegister display goes blank when mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAn 80mAh backup cell at 3.6V carries roughly 0.29Wh of usable energy — enough to sustain RAM retention, but not enough to drive the display and printer simultaneously. If the display goes blank the moment mains fails, the backup battery is not the fault — the cell is doing its job protecting memory, and the display load is simply beyond its capacity. Check whether programmed data survived the outage; if prices and totals are intact, the battery is working correctly. If data is also lost, the cell needs a full 12-hour charge cycle on mains before the next power interruption.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339820630106,"sku":"BWCS-SER290SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339820662874,"sku":"BWCS-SER290SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339820695642,"sku":"BWCS-SER290SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SER290SL-1.webp?v=1778366812"},{"product_id":"geneko-supercash-replacement-battery-74v-2600mah-li-ion","title":"GENEKO SuperCash 7.4V Replacement Battery INR18650 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGENEKO SuperCash — 7.4V Li-ion Replacement Battery (INR18650 2S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2600mAh Li-ion replacement battery for the GENEKO SuperCash point-of-sale terminal. It fits the backup battery bay and keeps the register operational when mains power drops. The INR18650 2S1P configuration matches the original cell arrangement and connector layout.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSuperCash backup bay fit:\u003c\/strong\u003e\n    The SuperCash uses a 2S1P 18650 pack to supply the backup rail. This replacement matches that voltage and cell count, so the register's trickle charger and BMS handshake with the pack as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the SuperCash's charge and discharge sequence. The BMS held cutoff correctly at both the low-voltage floor and the 8.4V charge ceiling with no thermal events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge procedure:\u003c\/strong\u003e\n    After fitting this battery, leave the register running on mains power for 12 hours before testing backup. The SuperCash charges the pack through a trickle circuit — a partial charge will not sustain the terminal through a real outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCash register losing programmed prices after a power outage with a new battery installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003ePLU data and price tables on the SuperCash are held in volatile RAM. That RAM depends on the backup battery to retain its contents the moment mains power drops. If the new battery was not fully charged through the register's trickle charger before the outage, the voltage sags below the RAM retention threshold within seconds. The fix is straightforward — run the terminal on mains for at least 12 hours after fitting the new pack before exposing it to a real or simulated power loss.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay going blank when mains power fails even with the backup battery fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SuperCash display and printer draw separate load rails during a power event. A partially discharged or degraded pack can hold enough voltage to pass the BMS check during normal operation but sag immediately when the display and any pending print job pull current simultaneously. Check the pack voltage at the terminal contacts — it should read between 7.2V and 8.4V under no load. If it reads below 7.0V, the pack has not completed its trickle charge cycle or has a depleted cell; return it to a full 12-hour mains charge before retesting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339820793946,"sku":"BWCS-GNS100BL-1","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339820826714,"sku":"BWCS-GNS100BL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339820859482,"sku":"BWCS-GNS100BL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GNS100BL-1.webp?v=1778366788"},{"product_id":"uniwell-cx3500-replacement-battery-74v-2600mah-li-polymer","title":"Uniwell CX3500 POS Backup Compatible Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eUniwell CX3500 — 7.4V Li-Polymer Replacement Battery (YT784262-2S)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 2600mAh Li-Polymer battery replaces the YT784262-2S backup cell in the Uniwell CX3500 cash register. The CX3500 uses this battery to hold volatile RAM data — including programmed prices, PLUs, and tax tables — during mains power loss. Without a functional backup battery, a power cut can wipe the register's entire configuration.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCX3500 compatibility:\u003c\/strong\u003e\n    The CX3500's backup circuit expects a 7.4V two-cell Li-Polymer pack with the YT784262-2S pinout. The BMS communicates charge state back to the register's trickle charger — a mismatched pack will either fail to charge or trigger a protection cutoff before the register sees full capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the CX3500's trickle charge circuit and confirmed the BMS accepted charge correctly, held voltage under the register's RAM-sustain load, and released cleanly on mains restore without a reset fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge requirement:\u003c\/strong\u003e\n    After fitting this battery, leave the CX3500 running on mains power for a full 12 hours before testing backup function. The register charges this pack through a low-current trickle circuit — skipping this step means the battery will not hold enough charge to sustain RAM through even a brief outage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the CX3500 loses programmed prices after a power outage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CX3500 stores PLUs, price lookups, and tax tables in volatile RAM — not flash. That RAM requires a constant voltage supply to retain data. The backup battery's only job is to hold that rail up the moment mains drops. If the battery voltage has sagged below the RAM sustain threshold — typically around 6.8V under load for a 7.4V pack — data loss happens in seconds. A depleted or degraded original battery is almost always the cause. Fit the replacement, complete the 12-hour trickle charge, and reprogram any lost data before testing.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCX3500 display goes blank the moment mains power fails\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe display going blank on mains loss is a different failure from data loss — it means the backup battery cannot sustain the full system load, not just RAM. The CX3500's display and printer draw significantly more current than the RAM-only standby load. If the battery has degraded or was never fully charged, voltage collapses under this combined draw and the register shuts down completely. Charge the replacement pack for 12 hours on mains before testing, then simulate a mains cut — if the display stays live and the printer is idle, the battery is sustaining load correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339820892250,"sku":"BWCS-UCX350SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339820925018,"sku":"BWCS-UCX350SL-2","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339820957786,"sku":"BWCS-UCX350SL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UCX350SL-1.webp?v=1778366812"},{"product_id":"olympia-cm75-replacement-battery-74v-2000mah-li-polymer","title":"Olympia CM75 7.4V Compatible Battery 2000mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOlympia CM75 \/ CM760 Series — 7.4V Li-Polymer Replacement Battery (CS724261LP 1S2P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2000mAh lithium-polymer battery is the backup power source for the Olympia CM75, CM760, CM761, CM762, and compatible cash register models. It keeps volatile RAM alive during a mains outage so programmed prices, tax rates, and transaction data are not lost. Capacity figure is 2000mAh (14.8Wh) as specified in the product data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCM75 \/ CM760 series compatibility:\u003c\/strong\u003e\n    These models share the same internal battery bay dimensions, 7.4V supply rail, and trickle-charge circuit. The CS724261LP 1S2P part number covers the full group because the BMS handshake and connector pinout are identical across the series.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the CM760 trickle-charge circuit and confirmed the BMS accepted charge without triggering a fault flag. Discharge testing showed the cell held voltage above the register's low-battery cutoff threshold throughout the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Leave the register running on mains power for at least 12 hours after fitting this battery. The CM-series trickle charger is low-current by design — the cell will not reach a useful state of charge in under an hour, and testing backup performance before a full charge gives a false result.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the CM75 loses programmed prices after a power cut even with a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eProgrammed prices and PLU data on the CM75 live in volatile SRAM. That SRAM needs a continuous voltage supply — the moment it drops below around 2.5V per cell, data is gone. A new battery that has not been fully charged through the trickle circuit carries too little charge to sustain that rail. Fit the battery, return the register to mains for 12 hours, then test by cutting mains briefly — the data should survive. If it still clears, check the trickle-charge voltage at the battery terminals; it should read between 8.2V and 8.4V on a healthy charger circuit.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay goes blank the moment mains power is removed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CM-series display and printer draw significantly more current than the backup battery is rated to sustain simultaneously. When mains drops, the register firmware should park the printer and hand display control to the battery — but if the battery voltage is already low, the combined load pulls the rail down instantly and the display blanks. Check the battery resting voltage with a multimeter before fitting: a healthy cell reads 7.4V to 7.6V at rest. If the display still blanks under battery alone after a full 12-hour charge, the fault is likely in the register's power-management circuit, not the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339820990554,"sku":"BWCS-CM761BL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339821023322,"sku":"BWCS-CM761BL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339821056090,"sku":"BWCS-CM761BL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CM761BL_1.webp?v=1778366788"}],"url":"https:\/\/batteryweb.com\/collections\/cash-register-batteries-keep-sales-running-without-interruptions.oembed","provider":"BatteryWeb","version":"1.0","type":"link"}