{"product_id":"daitem-logisty-diagral-hager-d5142-replacement-battery-37v-90mah-li-polymer","title":"Daitem BAT11 D5142 Replacement Battery 3.7V 90mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem D5142 \/ SC100AU \/ SC101AX Alarm Panel — 3.7V Li-Polymer Replacement Battery (BAT11)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is the BAT11 Li-Polymer cell used in Daitem alarm control panels including the Logisty-Diagral-Hager D5142, SC100AU, SC101AX, and D5130GB series. It runs at 3.7V with a 90mAh (0.33Wh) capacity. The cell maintains backup memory and wireless communication functions when mains power drops.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD5142 \/ SC100AU \/ SC101AX compatibility:\u003c\/strong\u003e\n    These panels share the same 3.7V backup rail, BAT11 connector footprint, and BMS handshake protocol. The cell dimensions — 21.10 × 12.00 × 5.30mm — must match exactly for proper seating in the battery bay.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and BMS communication checks on a D5142 panel. The BMS accepted the cell without fault codes and completed the float-charge acceptance cycle within the expected window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation conditioning:\u003c\/strong\u003e\n    Do not run a zone or diagnostic test immediately after fitting this cell. Allow 24–48 hours on float charge first. The panel samples backup voltage during the test cycle — a fresh cell that has not completed acceptance will trip a low-battery report even if the cell is healthy.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programmed zones during a power outage after battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed BAT11 cell needs time on the panel's float charge circuit before it can sustain memory backup voltage. If mains power cuts before the cell has fully accepted charge, the panel voltage can drop below the memory-retention threshold — typically around 3.0V — and zone configuration is lost. This is not a faulty cell; it is a timing issue. Fit the new cell, restore mains power, and leave the panel undisturbed for 48 hours before the next planned outage or test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel still showing low-battery fault 30 minutes after fitting a new BAT11\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe D5142 and related panels poll backup battery voltage on a timed cycle, not instantly. Immediately after installation, the cell's resting voltage may sit slightly below the panel's report threshold — especially if the cell has been in storage. The panel will clear the fault automatically once the float charge circuit raises cell voltage above approximately 3.6V, which typically happens within the first 24–48 hours. Do not replace the cell again; leave mains power connected and recheck the panel status after 48 hours.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309834141786,"sku":"BWCS-BCT110BT-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309834174554,"sku":"BWCS-BCT110BT-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309834207322,"sku":"BWCS-BCT110BT-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCT110BT-1.webp?v=1777868134","url":"https:\/\/batteryweb.com\/products\/daitem-logisty-diagral-hager-d5142-replacement-battery-37v-90mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}