{"product_id":"zoncare-zq-1201g-replacement-battery-111v-1600mah-li-ion","title":"Zoncare ZQ-1201G Replacement Battery 11.1V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZoncare ZQ-1201G \/ ZQ-1203G — 11.1V Li-ion Replacement Battery (BAT-120005)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V 1600mAh Li-ion replacement battery for the Zoncare ZQ-1201G and ZQ-1203G portable pulse oximeters. These handheld clinical devices monitor blood oxygen saturation and pulse rate, and depend on a healthy battery to complete their power-on self-test and maintain accurate readings. OEM part references are BAT-120005 and HYLB-2089.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZQ-1201G and ZQ-1203G platform:\u003c\/strong\u003e\n    Both models share the same 11.1V battery rail, connector type, and BMS handshake protocol, which is why a single cell services both. The battery communicates state-of-charge data directly to the device firmware — a mismatched cell voltage will trigger a fault flag at startup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the ZQ-series startup sequence and monitored BMS communication throughout. The protection circuit engaged correctly at low-voltage cutoff, and the charge IC accepted a full cycle without flagging an error state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After installing this battery, allow the device to complete its full power-on self-test without interruption. The ZQ-series BMS runs a verification check at startup — cutting power during this sequence causes a persistent battery fault flag that does not clear until the next complete 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 ZQ-1201G reports a battery fault immediately after a fresh swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ZQ-series firmware compares the incoming cell's state-of-charge against a threshold calibrated to the OEM chemistry profile. A new cell that has partially self-discharged during storage may read below that threshold even if it is not deeply discharged. The BMS then raises a fault rather than entering normal operation. One full charge-discharge cycle resets the learned capacity value and clears this flag on the next boot.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator stalling below 100% on first use\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn first charge, the ZQ-series charge IC applies a conservative current limit to an uncharacterised cell — this is expected behaviour, not a faulty battery. The charge cycle will appear to stall between 90% and 95% for an extended period before the indicator advances. This is the IC's top-off phase applying a reduced current as cell voltage approaches 12.6V. Let the charge complete uninterrupted and the indicator will reach 100% before the second cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381361705050,"sku":"BWCS-ZRQ120MD-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381361737818,"sku":"BWCS-ZRQ120MD-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381361770586,"sku":"BWCS-ZRQ120MD-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZRQ120MD-1.webp?v=1778900304","url":"https:\/\/batteryweb.com\/products\/zoncare-zq-1201g-replacement-battery-111v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}