{"product_id":"brooks-80-replacement-battery-12v-5000mah-ni-mh","title":"Brooks 80 Medical Device Replacement Battery 12V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBrooks 80 \/ 180 — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 5000mAh (60Wh) Ni-MH replacement battery for the Brooks 80 and 180 portable medical devices. It fits both models directly. Voltage and capacity match the original specification — no modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrooks 80 and 180 compatibility:\u003c\/strong\u003e\n    Both models run on the same 12V Ni-MH battery platform and share the same connector and BMS handshake protocol. A single cell fits both units without any adapter or wiring change.\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 Brooks 80 platform. The BMS accepted the cell, completed its verification pass, and held voltage within expected tolerance across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-on self-test — do not interrupt:\u003c\/strong\u003e\n    After fitting this battery, let the device complete its full startup self-test without interruption. The Brooks BMS runs a chemistry verification at boot. Cutting power during that sequence triggers a persistent battery fault flag that won't clear until the next clean full reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm on the Brooks 80 immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Brooks BMS uses a calibrated threshold tuned to the charge profile of the original factory cell. A new replacement cell hasn't yet built the internal resistance baseline the BMS expects to see. Until that baseline is established, the BMS can misread state-of-charge and trigger a low battery alarm even on a full cell. One complete charge-discharge cycle is usually enough for the BMS to recalibrate. Run the device through one full cycle before relying on the battery indicator for clinical decisions.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after the battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–2% per day. A cell stored for several months can drop below the BMS recovery threshold — typically around 9V on a 12V Ni-MH pack — and the BMS locks out to prevent damage. Connect the battery to the charger before fitting it to the device. Most charge controllers will detect the low-voltage cell and apply a slow trickle recovery charge before stepping up to full current. Once the pack reaches approximately 10.5V, the BMS unlocks and the device will power on normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381417869402,"sku":"BWCS-ACS180MD-1","price":130.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381417902170,"sku":"BWCS-ACS180MD-2","price":154.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381417934938,"sku":"BWCS-ACS180MD-3","price":172.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ACS180MD-1.webp?v=1778900660","url":"https:\/\/batteryweb.com\/products\/brooks-80-replacement-battery-12v-5000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}