{"product_id":"bionet-ekg3000-replacement-battery-12v-4200mah-ni-mh","title":"Bionet EKG3000 Replacement Battery 12V 4200mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBionet EKG3000 — 12V Ni-MH Replacement Battery (GPHC132MOT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 4200mAh Ni-MH replacement battery for the Bionet EKG3000 portable electrocardiograph. It also fits the FC-1400 TwinView Fetal Monitor and CardioCare 2000 ECG. Capacity matches the OEM specification at 50.4Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEKG3000, FC-1400, and CardioCare 2000 compatibility:\u003c\/strong\u003e\n    These three Bionet units share the same 12V Ni-MH battery bay, connector pinout, and BMS communication protocol. One cell format covers the full platform 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 EKG3000. The BMS accepted the cell without fault codes, completed its self-test handshake, and held stable voltage across the full load profile of the ECG acquisition circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap power-on sequence:\u003c\/strong\u003e\n    After installing this battery, allow the device to complete its full power-on self-test without interruption. The Bionet BMS runs a chemistry verification step at startup — cutting power during this window logs a 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 EKG3000 reports a battery fault on a brand-new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EKG3000 BMS stores a learned capacity profile from the previous cell. When a new Ni-MH cell is installed, the BMS compares its first charge reading against that stored profile and can flag a mismatch as a fault. This is not a defective cell — it is the BMS running its validation pass against unfamiliar data. One full charge-to-discharge cycle clears the stored profile and lets the BMS register the new cell's baseline. After that cycle, the fault clears and the battery indicator reads accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator stalls below 100% on the first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn first charge, the EKG3000 charge IC applies a conservative current limit when it cannot confirm the cell's internal resistance history. This causes the charge indicator to plateau at 80–90% and stall. The cell is still receiving charge — the IC is running a slow top-off pass rather than terminating normally. Let the charge cycle run to natural termination without unplugging early. After one complete cycle, the charge IC recalibrates its delta-V cutoff to the new cell and subsequent charges reach 100% and terminate correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381506506842,"sku":"BWCS-EKG300MD-1","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381506539610,"sku":"BWCS-EKG300MD-2","price":107.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381506572378,"sku":"BWCS-EKG300MD-3","price":118.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EKG300MD-1.webp?v=1778901305","url":"https:\/\/batteryweb.com\/products\/bionet-ekg3000-replacement-battery-12v-4200mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}