{"product_id":"carewell-ecg-1101-replacement-battery-12v-2000mah-ni-mh","title":"Carewell ECG-1101 Replacement Battery 12V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCarewell ECG-1101 Series — 12V Ni-MH Replacement Battery (88889089)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 12V 2000mAh Ni-MH battery replaces part number 88889089 in the Carewell ECG-1101, ECG-1101G, and ECG-1101B portable electrocardiogram monitors. These handheld devices are used for cardiac rhythm monitoring in clinical and home settings. Voltage, connector, and BMS handshake match the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eECG-1101, ECG-1101G, and ECG-1101B compatibility:\u003c\/strong\u003e\n    All three variants share the same 12V power rail, physical form factor, and BMS communication protocol, which is why a single cell supports the full model range. The connector pinout and charge IC signalling are identical across the series.\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 ECG-1101 platform. The BMS accepted the new cell on first insertion, completed its verification handshake, and held voltage within tolerance across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-on self-test after installation:\u003c\/strong\u003e\n    Once installed, let the device run its full startup self-test without interruption. The ECG-1101 runs a BMS verification sequence at boot — cutting power mid-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\"\u003eWhy the ECG-1101 flags a battery fault on a fully charged new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECG-1101's BMS uses a learned chemistry profile to validate cell state at startup. A new Ni-MH cell has not yet established the charge\/discharge curve the BMS expects from a conditioned cell. Until one full charge-discharge cycle is complete, the BMS may flag a fault or show a lower-than-expected state of charge. Run one complete cycle before relying on the battery for clinical monitoring.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator not reaching 100% on the first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn first charge, the ECG-1101's charge IC applies a conservative current limit to an unrecognised cell. This causes the indicator to plateau below 100% and sometimes stop advancing entirely. This is a charge IC behaviour, not a cell fault. Run the device down to automatic cutoff, then charge uninterrupted — the second charge cycle typically reaches full capacity and registers correctly on the display.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381454438490,"sku":"BWCS-CRE110MD-1","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381454471258,"sku":"BWCS-CRE110MD-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381454504026,"sku":"BWCS-CRE110MD-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CRE110MD-1.webp?v=1778900876","url":"https:\/\/batteryweb.com\/products\/carewell-ecg-1101-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}