{"product_id":"fukuda-cardisuny-me501bx-ecg-analyzer-replacement-battery-12v-2000mah-ni-mh","title":"Fukuda Cardisuny ME501BX 12V Replacement Battery 120279","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFukuda Cardisuny ME501BX ECG Analyzer — 12V Ni-MH Replacement Battery (120279)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 2000mAh Ni-MH replacement battery for the Fukuda Cardisuny ME501BX ECG Analyzer. It fits the portable electrocardiograph used in clinical and point-of-care cardiac diagnostics. Voltage and capacity match OEM part 120279 (also listed as BATT\/110279).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eME501BX compatibility:\u003c\/strong\u003e\n    The ME501BX runs a 12V power rail with a BMS that verifies cell chemistry at startup. Ni-MH cells at this voltage and capacity profile match the handshake the device expects — substituting a different chemistry triggers a persistent battery fault on the status display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the ME501BX charge circuit and confirmed the BMS accepted the cell, completed its self-test sequence, and passed charge status to the device without fault codes. Charge termination behaved correctly at full capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the ME501BX complete its full power-on self-test without interruption. The device runs a BMS verification sequence at boot — cutting power during this window registers 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 ME501BX alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ME501BX BMS stores a charge threshold calibrated to the OEM cell's internal resistance profile. A new replacement cell has a slightly different resistance signature on the first few cycles, which causes the BMS to read capacity conservatively. The device may flag low battery even when the cell is at or near full charge. One complete charge-discharge cycle recalibrates the BMS threshold — after that cycle, the alarm clears and the charge indicator reads accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after battery arrived or sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage — if voltage drops below approximately 10.5V, the ME501BX BMS enters a protection state and blocks normal startup to prevent damage to the cell. The device appears completely dead: no display, no response to the power button. Place the battery on charge for a full uninterrupted cycle before attempting to power on the analyzer. Once voltage recovers above the BMS recovery threshold, the device will boot normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381492711514,"sku":"BWCS-FXE501MD-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381492744282,"sku":"BWCS-FXE501MD-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381492777050,"sku":"BWCS-FXE501MD-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FXE501MD-1.webp?v=1778901266","url":"https:\/\/batteryweb.com\/products\/fukuda-cardisuny-me501bx-ecg-analyzer-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}