{"product_id":"physio-control-lucas-2-replacement-battery-259v-3000mah-li-polymer","title":"Physio-Control LUCAS 2 Replacement Battery 25.9V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhysio-Control LUCAS 2 \/ LUCAS 3 — 25.9V Li-Polymer Replacement Battery (100947-00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 25.9V, 3000mAh Li-Polymer battery replaces OEM part numbers 100947-00, 16201-00, and 11576-000080 in the Physio-Control LUCAS 2 and LUCAS 3 automated chest compression devices. The LUCAS platform drives a motorized piston mechanism that delivers continuous mechanical CPR — a task that draws hard, repetitive current pulses from the battery pack. Voltage, connector, and BMS communication must match exactly for the device to pass its power-on self-test.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLUCAS 2 and LUCAS 3 compatibility:\u003c\/strong\u003e\n    Both generations share the same 25.9V battery architecture, connector pinout, and BMS handshake protocol. The pack communicates state-of-charge data back to the device controller — a mismatch in cell chemistry or communication profile causes the device to flag a battery fault before the piston motor ever activates.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through the LUCAS power-on self-test sequence and full piston actuation cycles. The BMS reported state-of-charge correctly, the device completed its self-test without fault codes, and the compression motor drew current within the expected operating envelope across repeated cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the LUCAS complete its full power-on self-test cycle without interrupting power. Medical device BMS verification runs at startup — cutting power mid-sequence causes a persistent false battery fault that will not clear until the device completes a clean, uninterrupted reboot from a fully charged pack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the LUCAS 2 flags a battery fault after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe LUCAS BMS applies a chemistry-specific threshold during its self-test — it checks not just voltage but the cell's internal resistance profile. A new Li-Polymer pack has a slightly elevated resistance on its first few cycles before the cells condition. This can push the reading just outside the OEM acceptance window, triggering a low-battery or fault flag even when the pack is fully charged. One complete charge-discharge cycle through the device normalises the resistance profile and clears the fault on subsequent self-tests.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLUCAS 3 will not power on after battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge over time — if a replacement pack has been on the shelf for several months, its resting voltage may fall below the LUCAS BMS recovery threshold, typically around 20V for a 25.9V nominal pack. Below that threshold, the BMS locks the discharge path and the device shows no response on the power button. Place the battery on a compatible Li-Polymer charger and allow a full charge cycle to bring cell voltage back above the recovery floor before attempting to install and power on the device.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381395652698,"sku":"BWCS-MPL300MD-1","price":508.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381395685466,"sku":"BWCS-MPL300MD-2","price":608.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381395718234,"sku":"BWCS-MPL300MD-3","price":682.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MPL300MD-1.webp?v=1778900536","url":"https:\/\/batteryweb.com\/products\/physio-control-lucas-2-replacement-battery-259v-3000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}