{"product_id":"yonker-m7-backup-replacement-battery-74v-2600mah-li-ion","title":"Yonker M7 Backup LB-06 Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eYonker M7 Backup — 7.4V Li-ion Replacement Battery (LB-06)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2600mAh lithium-ion replacement battery for the Yonker M7 Backup portable medical device. It matches the OEM part number LB-06 and fits directly into the M7 Backup's battery bay. The M7 Backup is a compact unit used for emergency backup power during patient monitoring and treatment procedures — this cell keeps that function available when the original pack degrades.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM7 Backup platform fit:\u003c\/strong\u003e\n    The M7 Backup runs a 7.4V two-cell Li-ion architecture with a BMS that verifies cell chemistry and voltage signature at startup. LB-06 carries the correct nominal voltage and connector pinout for that handshake to complete without a fault flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the M7 Backup's startup self-test sequence and monitored BMS communication. The charge controller accepted the cell without triggering a chemistry mismatch fault, and the protection circuit responded correctly to load draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eStartup sequence on the M7 Backup:\u003c\/strong\u003e\n    After installing this battery, allow the device to complete its full power-on self-test cycle without interruption. The M7 Backup's BMS runs a verification routine at boot — cutting power during this window causes a false battery fault that persists until the next full reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eM7 Backup not completing boot sequence on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe M7 Backup's BMS is calibrated to the OEM cell's state-of-charge curve. A new replacement cell at partial charge may sit outside the expected voltage window at boot, causing the device to halt mid-sequence. This is not a fault with the cell — it is a threshold mismatch during the first cycle. Charge the battery fully before the first use, then allow the device to boot without interruption. After one complete charge-discharge cycle, the BMS recalibrates and the boot sequence completes normally.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm triggered immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the BMS has not yet completed its learn cycle on the new cell. The alarm threshold is set against an OEM chemistry profile, and a new cell needs one full charge-discharge cycle before the BMS can accurately map its capacity curve. On the first cycle, the device may read state-of-charge as lower than actual. Run one complete cycle — charge to full, allow normal discharge under load — and the alarm threshold will align. If the alarm persists beyond two full cycles, check cell resting voltage with a multimeter; it should read 8.2–8.4V immediately after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381360853082,"sku":"BWCS-YKM700MD-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381360885850,"sku":"BWCS-YKM700MD-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381360918618,"sku":"BWCS-YKM700MD-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-YKM700MD-1.webp?v=1778900304","url":"https:\/\/batteryweb.com\/products\/yonker-m7-backup-replacement-battery-74v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}