{"product_id":"yeacomm-m60-replacement-battery-74v-2600mah-li-ion","title":"Yeacomm M60 Replacement Battery 7.4V 2600mAh Z2000","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eYeacomm M60 \/ S10 \/ S11 \/ S12 — 7.4V Li-ion Replacement Battery (Z2000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2600mAh Li-ion battery replaces the Z2000 backup cell in Yeacomm cable modems. It fits the M60, S10, S11, and S12 models. When mains power drops, this battery keeps the modem running so internet and VoIP services stay up during an outage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM60 \/ S10 \/ S11 \/ S12 platform:\u003c\/strong\u003e\n    These four models share the same 7.4V backup battery bay, Z2000 connector pinout, and BMS handshake protocol — one cell covers all four 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 the M60 charge controller and confirmed the BMS accepted the pack, completed a full charge cycle, and passed the modem's internal battery self-test sequence without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirmware charge window before first outage test:\u003c\/strong\u003e\n    After installing this battery, let the modem charge it for at least 4 hours before cutting mains power to test it. Yeacomm modem firmware will not commit the backup cell to emergency duty until it has recorded a completed charge cycle — testing too early will look like battery failure even when the cell is fine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVoIP drops during outage while internet stays up\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eData traffic and VoIP traffic draw differently from the backup cell. The modem's embedded multimedia terminal adapter pulls a sustained higher-current load for active voice calls compared to idle data routing. If the Z2000 cell is partially discharged or has aged past about 70% capacity, the voltage sags enough under VoIP load to trip the BMS — dropping calls while data packets still pass at lower draw. Replacing the cell and allowing a full charge cycle before any outage test resolves this in most cases.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eModem battery error light stays on after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a firmware timing issue, not a defective battery. Yeacomm modems run a battery acceptance sequence that takes up to 24 hours after a new cell is installed — the modem must see the pack reach full charge voltage (8.4V at the terminals) and hold it before clearing the error flag. Do not pull and reinstall the battery thinking it is faulty. Leave the modem plugged in on mains power for a full 24 hours, then check the indicator again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333517639770,"sku":"BWCS-YMP110SL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333517672538,"sku":"BWCS-YMP110SL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333517705306,"sku":"BWCS-YMP110SL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-YMP110SL-1.webp?v=1778212957","url":"https:\/\/batteryweb.com\/products\/yeacomm-m60-replacement-battery-74v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}