{"product_id":"2gig-gc3-panel-replacement-battery-37v-3800mah-li-polymer","title":"2GIG GC3 Panel Replacement Battery 3.7V 3800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003e2GIG GC3 Panel Series — 3.7V Li-Polymer Replacement Battery (823990)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 3800mAh Li-Polymer cell is the direct replacement backup battery for the 2GIG GC3 Panel, GC3e Panel, and SP1-GC3 control panels. It slots into the panel's battery bay and maintains alarm processor and communication functions when AC power drops. OEM part numbers 823990 and 10-000014-001 both reference this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGC3 and GC3e platform fit:\u003c\/strong\u003e\n    The GC3, GC3e, and SP1-GC3 all share the same battery bay footprint, connector polarity, and BMS handshake protocol — one cell covers all three. The 89.10 × 37.50 × 8.00mm form factor matches the original housing 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 a full charge cycle on a GC3 panel. The BMS accepted the cell without fault codes, held float charge correctly, and passed the panel's internal battery health check after a 48-hour conditioning period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install zone testing:\u003c\/strong\u003e\n    Do not run a diagnostic zone test immediately after fitting this cell. The panel needs 24–48 hours at float charge before its battery monitor reports an accurate state of charge. Running a test early will trigger a false low-battery alert even on a fully functional cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the GC3 panel reports low battery hours after a fresh cell install\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe GC3's onboard battery monitor does not read voltage directly — it tracks charge acceptance over time. A new cell at rest voltage (around 3.6–3.7V) has not yet completed a supervised charge cycle, so the panel flags it as low. This is a BMS reporting behaviour, not a fault with the cell. Leave the panel on AC power for 24–48 hours and the low-battery event will clear automatically once the supervisor confirms a full charge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel loses saved programming during a power outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops programming during an outage shortly after a battery replacement, the new cell has not yet been accepted into the backup circuit. The GC3 requires the battery to complete a conditioning period on AC before it will draw from it under load. A cell pulled from storage at partial charge can read fine on a meter but still fail to sustain the panel during a switchover. Restore AC power, allow 48 hours of float charging, then simulate a brief outage — the panel should hold configuration at 3.5V or above.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309827719258,"sku":"BWCS-ALM990BT-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309827752026,"sku":"BWCS-ALM990BT-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309827784794,"sku":"BWCS-ALM990BT-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ALM990BT-1.webp?v=1777868106","url":"https:\/\/batteryweb.com\/products\/2gig-gc3-panel-replacement-battery-37v-3800mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}