{"product_id":"edanins-ecg-1a-replacement-battery-12v-2000mah-ni-mh","title":"EDANINS ECG-1A Replacement Battery 12V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEDANINS ECG-1A — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2000mAh Ni-MH replacement battery for the EDANINS ECG-1A portable electrocardiogram monitor. It fits the ECG-1A directly and restores power to the unit for cardiac rhythm capture and display. Voltage and capacity match OEM specifications: 12V, 2000mAh (24Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eECG-1A platform fit:\u003c\/strong\u003e\n    The ECG-1A uses a 12V Ni-MH cell pack with a specific connector and BMS handshake tied to that chemistry. Swapping to Li-ion would trigger a charge fault — this cell keeps the correct voltage curve and charge termination behaviour the device expects.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the ECG-1A's charge IC and confirmed the BMS accepted the cell without fault codes. The charge termination fired correctly at full capacity, and the device passed its power-on self-test without interruption.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the ECG-1A complete its full power-on self-test cycle without cutting power. The device runs BMS verification at startup — interrupting it locks in 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 ECG-1A flags a low battery warning on a freshly charged new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECG-1A's BMS stores a charge threshold calibrated to the OEM cell's internal resistance profile. A new replacement cell has a slightly different resistance curve until it's been through at least one full charge-discharge cycle. On the first use, the BMS reads this mismatch as a capacity shortfall and triggers the low battery alarm even at full charge. Run one complete charge-discharge cycle before using the device clinically — the BMS recalibrates on that cycle and the alarm clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eECG-1A won't power on after the battery sat unused in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–2% per day at room temperature. A cell stored for several months can drop below the BMS recovery threshold — typically around 10V on a 12V Ni-MH pack — at which point the ECG-1A's protection circuit blocks power-on to prevent damage. Connect the battery to the charger and leave it for a full charge cycle without attempting to power on the device. Once the pack reaches approximately 13.2V fully charged, the BMS re-enables the output and the device will boot normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381486321754,"sku":"BWCS-BCG220MD-1","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381486354522,"sku":"BWCS-BCG220MD-2","price":60.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381486387290,"sku":"BWCS-BCG220MD-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCG220MD-1.webp?v=1778901170","url":"https:\/\/batteryweb.com\/products\/edanins-ecg-1a-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}