{"product_id":"philips-heartstart-fr3-aed-replacement-battery-12v-4700mah-li-mno2","title":"Philips HeartStart FR3 AED 12V Replacement Battery 989803150161","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips HeartStart FR3 AED — 12V Li-MnO2 Replacement Battery (989803150161)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 4700mAh lithium-manganese dioxide battery for the Philips HeartStart FR3 AED. It fits the HeartStart FR3, DSA HeartStart FR3, and HeartStart FR3 861388 defibrillator variants. Chemistry and voltage match OEM specification 989803150161.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFR3 platform compatibility:\u003c\/strong\u003e\n    The FR3 family shares a common battery bay, BMS handshake protocol, and 12V power rail across all listed variants. The BMS authenticates cell chemistry at startup — Li-MnO2 is required. Substituting a different chemistry type will trigger a persistent battery fault on the device status display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the FR3 startup sequence and verified BMS handshake completion, charge acceptance, and self-test pass status. The BMS executed its readiness verification without flagging cell chemistry or capacity errors after one full charge-discharge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test cycle:\u003c\/strong\u003e\n    After fitting this battery, allow the FR3 to complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence logs a false battery fault that persists until a clean reboot is performed from a rested state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the FR3 BMS rejects a new Li-MnO2 cell on first installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe HeartStart FR3 uses a conservative BMS calibration set against a known OEM cell profile. A brand-new cell has not yet established its discharge curve in the BMS memory, so the first self-test can read capacity as out-of-range even when the cell is fully charged. This is not a fault with the cell — it is the BMS applying OEM thresholds before a learn cycle completes. One full charge-to-discharge cycle resolves the mismatch and allows the BMS to log accurate capacity data going forward.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFR3 displaying low battery status immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom appears when the BMS self-test threshold has not been met by the new cell's first charge cycle. The FR3's charge IC applies a conservative initial charge limit on unfamiliar cells, which can prevent the battery reaching the full state-of-charge the BMS expects before clearing the low-battery flag. Charge the battery fully with the device powered off, then power on and allow the complete startup self-test to run uninterrupted. If the flag persists after one full cycle, check that resting voltage measures at or above 12V before re-seating the battery.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381451980890,"sku":"BWCS-PHF300MD-1","price":87.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381452013658,"sku":"BWCS-PHF300MD-2","price":103.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381452046426,"sku":"BWCS-PHF300MD-3","price":115.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHF300MD-1.webp?v=1778900958","url":"https:\/\/batteryweb.com\/products\/philips-heartstart-fr3-aed-replacement-battery-12v-4700mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}