{"product_id":"comen-cm-1200b-ecg-replacement-battery-144v-2600mah-li-ion","title":"COMEN CM-1200B ECG 14.4V Replacement Battery 2600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCOMEN CM-1200B ECG — 14.4V Li-ion Replacement Battery (CM-1200B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V 2600mAh Li-ion battery for the COMEN CM-1200B and CM1200B portable electrocardiograph. It fits the battery bay directly and connects to the device's BMS via the original connector. Capacity matches the factory specification at 37.44Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCM-1200B and CM1200B compatibility:\u003c\/strong\u003e\n    Both model variants share the same battery bay dimensions (73.70 × 69.50 × 18.70mm), connector pinout, and 14.4V nominal voltage rail. The BMS handshake protocol is identical across the run, so one battery covers both designations.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge-discharge cycles on the CM-1200B platform and confirmed the BMS accepted the cell without fault codes. The protection circuit responded correctly to over-current and end-of-discharge cutoff events during load testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the CM-1200B complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup — cutting power during this window logs a false battery fault that persists 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\"\u003eWhy the CM-1200B shows a low battery alarm immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe CM-1200B's charge IC applies a conservative voltage threshold during the first few cycles on a new cell. Until the cell completes one full charge-discharge cycle, the BMS internal model may read state-of-charge below its alarm threshold even when the cell is genuinely at capacity. This is not a fault with the battery — it is the BMS learning the cell's actual charge curve. Run one complete charge and discharge cycle before trusting the indicator in clinical use. After that cycle, the alarm behaviour returns to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCM-1200B not powering on after the battery sat unused in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If the battery voltage drops below approximately 2.5V per cell, the CM-1200B's BMS enters deep-discharge lockout and the device will not power on even when connected to a charger. To recover, connect the device to mains power and leave it on the charger undisturbed for at least 30 minutes — the charge IC applies a low-current pre-charge trickle to bring cell voltage above the 3.0V recovery threshold before resuming standard CC\/CV charging. Once the charge LED responds normally, a full charge cycle can proceed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381503656026,"sku":"BWCS-EDS120MD-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381503688794,"sku":"BWCS-EDS120MD-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381503721562,"sku":"BWCS-EDS120MD-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EDS120MD-1.webp?v=1778901305","url":"https:\/\/batteryweb.com\/products\/comen-cm-1200b-ecg-replacement-battery-144v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}