{"product_id":"mortara-f1559-replacement-battery-74v-1600mah-li-ion","title":"Mortara F1559 ECG Replacement Battery 7.4V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMortara F1559 \/ Monitor Surveyor S4 — 7.4V Li-ion Replacement Battery (D062)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 1600mAh Li-ion battery replaces the original power cell in the Mortara F1559 12-lead ECG machine and Monitor Surveyor S4. Both devices use the same battery platform, sharing OEM part numbers 120020-O, 4800-018, and D062. The F1559 is portable clinical diagnostic equipment — the battery must meet specific BMS handshake requirements to pass the device's internal self-test on startup.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eF1559 and Monitor Surveyor S4 compatibility:\u003c\/strong\u003e\n    Both models run the same 7.4V bus voltage and use an identical connector and BMS communication protocol. The same cell works across both platforms without any hardware modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the F1559's full power-on sequence and confirmed the BMS handshake completed without fault flags. The charge IC accepted the cell and the self-test passed on the second charge cycle after the initial conditioning pass.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, allow the F1559 to complete its full power-on self-test without interrupting or power-cycling the device. The BMS runs a verification routine at startup — cutting power mid-sequence logs 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 F1559 alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe F1559 uses a conservative BMS threshold calibrated to the original OEM cell's charge curve. A new replacement cell has a slightly different internal resistance profile until it completes one full charge-discharge cycle. Until that first cycle is done, the BMS reads the cell's voltage response as below its pass threshold and triggers a low battery alert even at full charge. Run one complete charge-discharge cycle before clinical deployment — the alarm clears on the next full charge after that cycle.\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\"\u003eLi-ion cells self-discharge during storage. If the cell drops below approximately 2.5V per cell (5.0V pack total), the F1559's BMS will not initiate a charge cycle and the device shows no response on the power button. Connect the device to mains power and leave it on the charger for a minimum of 30 minutes without pressing power — most charge ICs apply a low-current pre-charge trickle below 3.0V per cell to recover the pack. Once the pack recovers above the BMS threshold, normal charging resumes and the device powers on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381370585178,"sku":"BWCS-MTD062MD-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381370617946,"sku":"BWCS-MTD062MD-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381370650714,"sku":"BWCS-MTD062MD-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD062MD-1.webp?v=1778900448","url":"https:\/\/batteryweb.com\/products\/mortara-f1559-replacement-battery-74v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}