{"product_id":"keylock-f-7400-12-replacement-battery-6v-2300mah-alkaline","title":"KeyLock F 7400-12 6V Replacement Battery 2300mAh Alkaline","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKeyLock F 7400-12 — 6V Alkaline Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 2300mAh alkaline battery for the KeyLock F 7400-12 electronic door lock. It replaces the internal power cell that drives the lock motor, keypad, and wireless modules. At 56.50 x 52.00 x 14.40mm, it fits directly into the battery compartment without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eF 7400-12 power rail:\u003c\/strong\u003e\n    The F 7400-12 runs all access logic — keypad, Bluetooth, motor driver — off a single 6V alkaline cell. Voltage must stay above the lock's minimum threshold or the controller rejects commands before the motor even engages.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through motor actuation and keypad polling sequences. The lock's BMS accepted the cell immediately with no low-voltage alert on insertion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap access verification:\u003c\/strong\u003e\n    After fitting this battery, test every access method — keypad code, Bluetooth app, and any keycards — before closing the door. Some F 7400-series locks run a firmware handshake after a power interruption that must complete before all credential types are accepted again.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLock beeping low-battery warning immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAlkaline cells that have sat in warehouse stock for an extended period can measure 6V open-circuit but sag under motor-start load. The F 7400-12 samples voltage during the first actuation, not at rest. If the cell can't hold voltage through that initial motor draw, the controller logs a low-battery event. Use a cell from fresh stock and check the printed expiry date — anything beyond two years of storage is suspect. Confirm resting voltage reads at or above 6.0V with a multimeter before installing.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBluetooth app not reconnecting to the lock after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003ePower interruption during a battery swap clears the lock's active Bluetooth session. The F 7400-12 does not automatically re-advertise to paired devices on every restart — it waits for a manual prompt on some firmware versions. Open the lock's companion app, navigate to the device list, and force a rescan or tap \"reconnect.\" If the lock still doesn't appear, remove the battery for 10 seconds, reinsert it, then retry the app scan within 30 seconds of power-up.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360204849242,"sku":"BWCS-SDL500SL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360204882010,"sku":"BWCS-SDL500SL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360204914778,"sku":"BWCS-SDL500SL-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SDL500SL-1.webp?v=1778610960","url":"https:\/\/batteryweb.com\/products\/keylock-f-7400-12-replacement-battery-6v-2300mah-alkaline","provider":"BatteryWeb","version":"1.0","type":"link"}