{"product_id":"philips-301-fvp-replacement-battery-75v-5000mah-li-ion","title":"Philips BL3601 Smart Lock Replacement Battery 7.5V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips 301-FVP \/ 708-FVP Series — 7.5V Li-ion Replacement Battery (BL3601)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.5V, 5000mAh Li-ion replacement battery for Philips electronic smart door locks. It fits the 301-FVP, 708-VP, 708-FVP, 709-FVP, and over a dozen additional models in the same series. The BL3601 \/ BL3602 \/ BL3603 and PB3601 \/ PB3602 \/ PB3603 OEM part numbers all cross to this unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e301-FVP and 708\/709-FVP platform fit:\u003c\/strong\u003e\n    These models share the same battery bay geometry, 7.5V power rail, and BMS handshake protocol. The lock's motor driver and keypad controller both draw from a single cell pack — a voltage mismatch here causes the lock to refuse operation entirely, not just warn low.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the lock's full wake sequence — motor actuation, keypad polling, and Bluetooth radio activation. The BMS held the output steady across all three loads without tripping the overcurrent cutoff on motor start.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install access method check:\u003c\/strong\u003e\n    After fitting this battery, test every access method — keypad, Bluetooth app, and keycard — before closing the door. The 301-FVP runs a firmware handshake on first power-up after battery interruption. If that sequence does not complete, the lock may accept the motor command but reject credential input until it finishes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 708-FVP shows low battery immediately after a new pack is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 708-FVP reads cell voltage at startup, not capacity. If the replacement battery has been sitting in storage, its resting voltage may have dropped below the lock's warning threshold — typically around 7.0V on this platform. The lock interprets that as a depleted battery and triggers the alert before the BMS can stabilise output. Charge the battery to full before installing it, then power-cycle the lock to clear the low-battery flag.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBluetooth app not connecting after battery swap on the 301-FVP\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCutting power to the 301-FVP resets the Bluetooth module's pairing state on some firmware versions. The lock radio comes back up in a restricted mode and will not complete a connection handshake with a previously paired phone. Open the Philips Home Access app, remove the lock from the device list, and re-add it using the QR code or manual ID on the lock body. The motor and keypad will continue to work independently during this process — only the app link is affected.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360210944090,"sku":"BWCS-PBL360SL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360210976858,"sku":"BWCS-PBL360SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360211009626,"sku":"BWCS-PBL360SL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PBL360SL-1.webp?v=1778611023","url":"https:\/\/batteryweb.com\/products\/philips-301-fvp-replacement-battery-75v-5000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}