{"product_id":"carewell-ecg-1103-replacement-battery-144v-2600mah-li-ion","title":"Carewell ECG-1103 Replacement Battery 14.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCarewell ECG-1103 Series — 14.4V Li-ion Replacement Battery (HX-18650-14.4-2000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 2600mAh (37.44Wh) Li-ion battery for the Carewell ECG-1103 portable electrocardiograph. It fits the ECG-1103, ECG-1103B, ECG-1103G, and ECG-1103L. The OEM part number is HX-18650-14.4-2000.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eECG-1103 series compatibility:\u003c\/strong\u003e\n    The ECG-1103, ECG-1103B, ECG-1103G, and ECG-1103L share the same 14.4V battery bay, connector pinout, and BMS handshake protocol. One battery fits all four variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on the ECG-1103 platform. The BMS completed voltage verification without faulting, and the device passed its power-on self-test on the first boot after installation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After installing this battery, let the ECG-1103 complete its full power-on self-test without interruption. The device runs a BMS verification step at startup — cutting power mid-sequence registers as a 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\"\u003eECG-1103 not completing boot sequence after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECG-1103 runs a multi-stage BMS verification during boot. A new cell that hasn't completed its first full charge-discharge cycle may present a resting voltage the device interprets as insufficient capacity. This causes the boot sequence to stall or loop. Charge the new battery to 100% before first installation, then allow the device to boot uninterrupted — don't press any keys during the self-test phase.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator not reaching 100% on the first charge cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECG-1103's charge IC applies a conservative current limit on cells it hasn't profiled before. On a new battery, this can cause the indicator to stall at 95–99% for an extended period before completing. This is a charge IC behaviour, not a cell fault. Let the first charge run to termination without removing the battery — the charge IC will establish baseline capacity and behave normally from the second cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381455028314,"sku":"BWCS-CRE103MD-1","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381455061082,"sku":"BWCS-CRE103MD-2","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381455093850,"sku":"BWCS-CRE103MD-3","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CRE103MD-1.webp?v=1778900876","url":"https:\/\/batteryweb.com\/products\/carewell-ecg-1103-replacement-battery-144v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}