{"product_id":"chinon-cvbp89-replacement-battery-12v-1800mah-ni-mh","title":"Chinon CVBP89 Medical Device Replacement Battery 12V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eChinon CVBP89 \/ CVT84 — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 12V, 1800mAh Ni-MH battery replaces the original cell in the Chinon CVBP89 and CVT84 medical imaging and diagnostic devices. It matches the OEM voltage rail and connector profile for these units. Capacity is 1800mAh (21.6Wh), sourced to the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCVBP89 and CVT84 platform fit:\u003c\/strong\u003e\n    Both models share the same 12V power architecture, BMS handshake protocol, and physical connector — a single cell serves both units 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 charge and discharge cycles on the CVBP89 platform. The BMS accepted the cell on first insertion, completed the startup verification sequence, and held voltage within spec across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eStartup self-test cycle:\u003c\/strong\u003e\n    After installing this battery, allow the device to complete its full power-on self-test without interruption. Medical diagnostic units on this platform run a BMS verification pass at boot — cutting power mid-sequence registers a false battery fault that will persist until the next clean reboot.\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 on new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe CVBP89 and CVT84 run a BMS learn cycle during their first few boots after a cell swap. On a fresh Ni-MH cell, the BMS has no charge history to reference, so it applies conservative thresholds during startup verification. The device may stall or loop at the self-test screen. Running one full charge-discharge cycle before clinical use gives the BMS enough data to calibrate its thresholds and complete the boot sequence normally.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm triggers immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the BMS compares the new cell's voltage signature against thresholds calibrated to an aged OEM cell. A fresh Ni-MH cell at full charge can present a slightly different internal resistance profile than a broken-in cell, which some medical device charge ICs read as a low-state anomaly. The fix is to run the device through one complete charge and discharge before use — after one full cycle, the BMS re-calibrates and the alarm clears. Confirm the cell is reading at or above 12V open-circuit before the cycle run.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381467578458,"sku":"BWCS-CBP308MD-1","price":105.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381467611226,"sku":"BWCS-CBP308MD-2","price":121.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381467643994,"sku":"BWCS-CBP308MD-3","price":133.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CBP308MD_1.webp?v=1778901051","url":"https:\/\/batteryweb.com\/products\/chinon-cvbp89-replacement-battery-12v-1800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}