{"product_id":"diversified-medical-nal8100rb-replacement-battery-12v-4400mah-ni-mh","title":"Diversified Medical NAL8100RB 12V Replacement Battery 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDiversified Medical NAL8100RB — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 4400mAh Ni-MH replacement battery for the Diversified Medical NAL8100RB. It fits clinical and medical equipment that depends on the original NAL8100RB battery pack. Capacity is 52.8Wh — sourced to match the original cell format and connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNAL8100RB platform fit:\u003c\/strong\u003e\n    The NAL8100RB uses a 12V Ni-MH chemistry with a specific BMS handshake that validates cell voltage and charge state at startup. This replacement matches that voltage rail and connector footprint so the device recognises the pack without a fault flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on the NAL8100RB platform. The BMS completed its verification sequence without triggering a low-battery alarm or self-test fault. Cell voltage held steady across the draw profile.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After installing this battery, let the device complete its full power-on self-test without interruption. Medical device BMS firmware runs a voltage and chemistry verification at boot — interrupting this sequence logs 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\"\u003eDevice not completing boot sequence after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe NAL8100RB device runs a BMS learn cycle during its first few boots with a new cell. If the pack has been in storage, cell voltage may have dropped below the BMS recovery threshold — typically around 10.5V for a 12V Ni-MH pack. The device interprets this as a faulty or depleted battery and halts the boot sequence before the self-test completes. Charge the pack fully before the first installation, then power on the device and allow the boot sequence to run to completion without interruption.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow-battery alarm triggers immediately after confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the device's BMS is calibrated to OEM cell parameters and the new Ni-MH cell hasn't yet passed its internal capacity threshold. The charge IC on first charge applies a conservative current limit, so the pack may not reach the voltage ceiling the BMS expects. Run one complete charge-discharge cycle on the device before clinical use — this allows the BMS to recalibrate its capacity estimate against the new cell. After that first full cycle, the low-battery alarm threshold resets correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381504344154,"sku":"BWCS-AMS812MD-1","price":118.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381504376922,"sku":"BWCS-AMS812MD-2","price":139.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381504409690,"sku":"BWCS-AMS812MD-3","price":155.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AMS812MD-1.webp?v=1778901324","url":"https:\/\/batteryweb.com\/products\/diversified-medical-nal8100rb-replacement-battery-12v-4400mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}