{"product_id":"colin-medical-instruments-press-mate-bp8800-replacement-battery-12v-2300mah-sealed-lead-acid","title":"Colin Medical Instruments Press-Mate BP8800 12V Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCOLIN MEDICAL INSTRUMENTS Press-Mate BP8800 Series — 12V Sealed Lead Acid Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2300mAh (27.6Wh) sealed lead-acid battery for the Colin Medical Instruments Press-Mate BP8800, Press-Mate 8800C, and 8800MSP monitors. These are oscillometric blood pressure monitors used in clinical and home settings. This battery restores power to units where the original cell has depleted below functional voltage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBP8800, 8800C, and 8800MSP compatibility:\u003c\/strong\u003e\n    All three monitors share the same 12V sealed lead-acid power rail, connector configuration, and BMS handshake requirements. Swapping between these units uses the same cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge cycle and monitored BMS communication during power-on. The charge controller accepted the cell without fault codes, and the BMS completed its verification sequence normally.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the monitor complete its full power-on self-test without interruption. The BP8800's BMS runs a chemistry verification at startup. Cutting power during this sequence logs a false battery fault that persists until the next complete reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the BP8800 flags a battery fault after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BP8800 charge controller applies conservative voltage thresholds tuned to the internal resistance profile of a conditioned cell. A new sealed lead-acid cell has higher internal resistance out of the box, which causes the BMS to read a lower effective voltage under load than the resting voltage suggests. This can trigger a low-battery fault even when the cell is fully charged. One complete charge-discharge cycle lowers internal resistance enough for the BMS to pass the cell. After that first cycle, the fault clears and does not return.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMonitor will not power on after battery was stored before installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSealed lead-acid cells self-discharge during storage. If a cell drops below approximately 10.5V, the BP8800's BMS enters a protection state and blocks startup entirely — the device shows no response. A standard charger will not recover a cell below this threshold because the charge IC reads the low voltage as a fault condition. Use a charger with a dedicated SLA recovery or trickle-charge mode to bring the cell back above 11V, then connect it to the monitor and run a normal charge cycle to full voltage before use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381386215514,"sku":"BWCS-SHT160MD-1","price":310.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381386248282,"sku":"BWCS-SHT160MD-2","price":370.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381386281050,"sku":"BWCS-SHT160MD-3","price":415.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SHT160MD-1.webp?v=1778900511","url":"https:\/\/batteryweb.com\/products\/colin-medical-instruments-press-mate-bp8800-replacement-battery-12v-2300mah-sealed-lead-acid","provider":"BatteryWeb","version":"1.0","type":"link"}