{"product_id":"nabc-htl3-replacement-battery-6v-2300mah-alkaline","title":"NABC HTL3 6V Alkaline Compatible Battery 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNABC HTL3 \/ HTL5 — 6V Alkaline Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V alkaline battery rated at 2300mAh (13.8Wh), built to fit the NABC HTL3 and HTL5 electronic door lock models. It slots into the battery compartment as a direct voltage and form-factor match for both units. Dimensions are 56.50 x 52.00 x 14.40mm — check these against your compartment before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHTL3 and HTL5 compatibility:\u003c\/strong\u003e\n    Both locks run on the same 6V power rail with identical battery compartment geometry and connector orientation, so one battery covers both models 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 HTL3 lock controller and confirmed the BMS accepted the cell voltage at power-on without triggering a low-battery fault or refusing to initialise the motor driver.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap access method verification:\u003c\/strong\u003e\n    After fitting this battery, test every access method — keypad, Bluetooth, and keycard — before closing the door. Some HTL-series locks run a firmware handshake after a power interruption, and if that sequence doesn't complete, certain credentials won't be accepted until it does.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery warning on the HTL3 immediately after a fresh battery install\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HTL3 reads cell voltage at startup and compares it against a threshold — typically around 5.4V for a 6V pack. Alkaline cells that have been sitting in storage can drop to 5.6–5.8V before they've ever powered a load, which puts them close enough to the threshold that some locks flag a warning. This battery ships at or near its nominal 6V open-circuit voltage. If you still see the warning after install, confirm polarity is correct and that the contacts are making clean contact — a partial connection raises apparent internal resistance and drops the reading the lock sees.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBluetooth not reconnecting to the HTL3 after a battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCutting power to the lock — even briefly during a battery swap — resets the Bluetooth radio stack on HTL-series units. The lock comes back up in a non-advertising state on some firmware versions, which means your phone app won't find it automatically. Open the lock's companion app, force a re-scan or tap \"Add device,\" and let the pairing sequence run to completion before testing access. If the app still can't find the lock, remove and reinsert the battery once more to force a full controller restart.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360203472986,"sku":"BWCS-SDL500SL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360203505754,"sku":"BWCS-SDL500SL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360203538522,"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\/nabc-htl3-replacement-battery-6v-2300mah-alkaline","provider":"BatteryWeb","version":"1.0","type":"link"}