{"product_id":"fukuda-fx-7102-replacement-battery-96v-4000mah-ni-mh","title":"Fukuda FX-7102 ECG Replacement Battery 9.6V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFukuda FX-7102 \/ FCP-7101 Series — 9.6V Ni-MH Replacement Battery (MB333BHR-4\/3AU)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9.6V 4000mAh Ni-MH replacement battery for the Fukuda FX-7102, FCP-7101, FX-7000, and Cardimax FX-7102 electrocardiograph systems. It matches OEM part numbers MB333BHR-4\/3AU and 8PH-4\/3A 3700-H-J18. These are portable cardiac diagnostic devices used in clinical and ambulatory settings.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFX-7102 and FCP-7101 platform compatibility:\u003c\/strong\u003e\n    These models share the same 9.6V battery rail, physical connector, and BMS handshake protocol — one cell pack covers the full group. The BMS on each device reads cell voltage and temperature during the power-on sequence, so chemistry match matters.\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 full-load discharge on the FX-7102 platform. The BMS cleared voltage and temperature checks cleanly by the second full cycle. No false low-battery flags triggered after cycle two.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-on self-test sequence:\u003c\/strong\u003e\n    After installing this battery, let the device complete its full startup self-test without interruption. The ECG's BMS runs a verification sweep at boot. Cutting power during that sweep stores a fault flag that persists until the next clean reboot — a common cause of repeat low-battery warnings on a fully charged pack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm on the FX-7102 immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe FX-7102 BMS was calibrated against aged OEM cells with a compressed voltage curve. A new Ni-MH cell has a flatter, higher mid-charge voltage that the BMS can misread as \"not fully charged\" on the first one or two cycles. This triggers the low-battery alarm even when the pack is at full capacity. Run one complete charge-discharge-recharge cycle before clinical use. After that cycle, the BMS recalibrates its threshold and the alarm clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after the replacement battery sat 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 pack stored for several months can drop below the FX-7102's BMS recovery threshold — typically around 8.4V for a 9.6V Ni-MH pack — and the device simply will not boot. Connect the battery to the device charger and leave it for a full uninterrupted charge cycle before attempting power-on. If the charge indicator does not respond within 30 minutes, check charger output voltage at the connector — it should read between 10.5V and 12V DC.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381520990298,"sku":"BWCS-FXD710MD-1","price":72.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381521023066,"sku":"BWCS-FXD710MD-2","price":84.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381521055834,"sku":"BWCS-FXD710MD-3","price":93.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FXD710MD-1.webp?v=1778901369","url":"https:\/\/batteryweb.com\/products\/fukuda-fx-7102-replacement-battery-96v-4000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}