{"product_id":"philips-defibrillator-halbautomat-forerunner-replacement-battery-18v-1400mah-li-mno2","title":"Philips 110217 Defibrillator Replacement Battery 18V 1400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips ForeRunner FR1 \/ AED BT1 — 18V Li-MnO2 Replacement Battery (110217)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 18V lithium-manganese dioxide battery replaces the OEM power cell in the Philips ForeRunner semi-automatic external defibrillator range. It fits the ForeRunner FR1, ForeRunner AED Aviation, and BT1 variants cross-referenced under part numbers 110217, M6456, and 989803136301. Capacity is 1400mAh (25.2Wh), matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eForeRunner AED platform compatibility:\u003c\/strong\u003e\n    These ForeRunner variants share a common 18V bus, BT1 connector footprint, and BMS handshake protocol — which is why a single cell covers the FR1, Aviation, and BT1-ABE configurations without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the ForeRunner's startup self-test sequence and monitored the BMS charge-acceptance handshake. The protection circuit engaged correctly at both charge cutoff and low-voltage thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the ForeRunner complete its full power-on self-test without interruption. The device runs a BMS verification routine at startup — cutting power mid-sequence stores a false fault flag that persists until the next clean reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSelf-test failure after battery swap in the ForeRunner AED\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ForeRunner's onboard diagnostic checks cell voltage, internal resistance, and BMS communication before clearing a ready state. A fresh Li-MnO2 cell that has not completed one full charge-discharge cycle can present an internal resistance reading outside the device's calibrated OEM window. This trips a self-test fault even when the cell is fully charged and otherwise functional. Run one complete charge cycle, then allow the device to perform an uninterrupted self-test — resistance normalises and the device clears to ready.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eForeRunner alarming low battery immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ForeRunner's BMS evaluates cell chemistry against stored OEM threshold tables during each self-test cycle. A new Li-MnO2 cell has not yet established a charge history, so the BMS applies its most conservative voltage-sag estimate and flags low battery even when resting voltage is correct. This is not a faulty cell — it is the BMS learn cycle running as intended. Complete one full charge-discharge cycle and re-run the self-test; resting voltage should read above 16.8V before the device clears the alarm.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381437431898,"sku":"BWCS-PHM645MD-1","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381437464666,"sku":"BWCS-PHM645MD-2","price":74.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381437497434,"sku":"BWCS-PHM645MD-3","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHM645MD-1.webp?v=1778900853","url":"https:\/\/batteryweb.com\/products\/philips-defibrillator-halbautomat-forerunner-replacement-battery-18v-1400mah-li-mno2","provider":"BatteryWeb","version":"1.0","type":"link"}