{"product_id":"primedic-medtronic-defi-b-replacement-battery-144v-3000mah-ni-mh","title":"Primedic TB01020701 Medtronic DEFI-B 14.4V Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePrimedic Medtronic DEFI-B Series — 14.4V Ni-MH Replacement Battery (TB01020701)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 3000mAh Ni-MH replacement battery for the Medtronic DEFI-B defibrillator and compatible models including the M110, M111, and M112. It replaces OEM part number TB01020701. Capacity figures are taken from product data — 43.2Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDEFI-B, M110, M111, M112 compatibility:\u003c\/strong\u003e\n    These models share the same 14.4V power rail, TB01020701 connector footprint, and BMS handshake protocol. The cell chemistry is Ni-MH across the entire range, so the BMS charge termination logic — negative delta-V detection — applies identically to all four platforms.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the DEFI-B platform. The BMS completed negative delta-V cutoff correctly at full charge, and the protection circuit responded within spec to load spikes consistent with capacitor recharge draws.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test cycle:\u003c\/strong\u003e\n    After fitting this battery, allow the device to complete its full power-on self-test without interruption. The DEFI-B runs a BMS verification sequence at startup — cutting power mid-sequence registers a false battery fault that persists until the next clean reboot cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the DEFI-B flags a low-battery alarm on a freshly charged replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe DEFI-B BMS was calibrated to the internal resistance profile of a conditioned OEM cell. A new Ni-MH cell has higher internal resistance on the first few cycles, which causes the BMS to read voltage sag under capacitor-recharge load as a depleted state. This is not a fault with the cell. Run one full charge-discharge cycle before clinical use — internal resistance drops significantly after the first full cycle, and the BMS alarm threshold will no longer trip under normal load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDEFI-B not completing boot sequence after battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–2% per day under ambient storage. A cell stored for several months can drop below the DEFI-B's BMS minimum recovery threshold — typically around 10.0–10.5V on a 14.4V Ni-MH pack — causing the device to halt mid-boot rather than attempt operation on a borderline supply. Connect the battery to the OEM charger before installing it. Allow a full uninterrupted charge cycle to bring the pack above 13.5V before fitting it in the device.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381464924250,"sku":"BWCS-MTB207MD-1","price":97.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381464957018,"sku":"BWCS-MTB207MD-2","price":114.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381464989786,"sku":"BWCS-MTB207MD-3","price":127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTB207MD-1.webp?v=1778900983","url":"https:\/\/batteryweb.com\/products\/primedic-medtronic-defi-b-replacement-battery-144v-3000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}