{"product_id":"saflock-a28110-replacement-battery-6v-2700mah-alkaline","title":"Saflock A28110 Replacement Battery 6V 2700mAh Alkaline","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSaflock A28110 \/ X-GAA-FC42 — 6V Alkaline Replacement Battery (884952)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 2700mAh alkaline replacement battery for the Saflock A28110 and X-GAA-FC42 electronic door locks. It replaces OEM part 884952 and restores power to the lock's keypad, motor, and access control circuitry. Voltage and physical dimensions match the original: 58.12 × 52.50 × 14.68mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA28110 and X-GAA-FC42 compatibility:\u003c\/strong\u003e\n    Both models run on the same 6V power rail and share the same battery compartment connector layout and BMS handshake sequence, which is why a single replacement battery covers both lock variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through a full lock cycle — keypad entry, motor actuation, and Bluetooth pairing handshake. The BMS accepted the power input cleanly with no undervoltage fault on first 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, Bluetooth, and keycard — before closing the door. The A28110 runs a firmware handshake after any power interruption, and some access credentials won't authenticate until that sequence 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 A28110 shows low battery immediately after a fresh install\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe A28110 reads battery state at first power-on and flags low voltage if the measured level sits below its threshold — even with a new battery installed. Alkaline cells that have been in storage for 12+ months can read 5.6V or lower on first contact, which the lock's BMS interprets as depleted. Check the battery date code before installation. A cell manufactured within the last six months should read 6.0–6.3V under no load at room temperature.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBluetooth drops and won't reconnect after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A28110's Bluetooth module loses its active pairing session every time main power is interrupted, including during a battery swap. The lock's radio re-initialises on fresh power, but the paired phone app does not automatically re-establish the session — the lock waits for a new connection request. Open the lock's companion app, navigate to the device list, and re-pair the A28110 from scratch. Once the app shows the lock as connected, test a Bluetooth unlock cycle before relying on it as your primary entry method.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360223494234,"sku":"BWCS-DRL120SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360223527002,"sku":"BWCS-DRL120SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360223559770,"sku":"BWCS-DRL120SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRL120SL-1.webp?v=1778610981","url":"https:\/\/batteryweb.com\/products\/saflock-a28110-replacement-battery-6v-2700mah-alkaline","provider":"BatteryWeb","version":"1.0","type":"link"}