{"product_id":"zoncare-qz-1212-replacement-battery-148v-5200mah-li-ion","title":"Zoncare QZ-1212 Replacement Battery 14.8V 5200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZoncare QZ-1212 — 14.8V Li-ion Replacement Battery (INR18650-4S2P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 5200mAh Li-ion replacement battery for the Zoncare QZ-1212 portable patient monitoring device. It uses an INR18650-4S2P cell configuration — four cells in series, two in parallel — matching the voltage rail and capacity of the original pack. Install it in any QZ-1212 unit where the existing battery no longer holds a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQZ-1212 platform fit:\u003c\/strong\u003e\n    The 4S2P configuration locks the nominal voltage at 14.8V, which matches the QZ-1212's internal power regulation and BMS handshake exactly. Deviating from this cell arrangement would trip the device's battery authentication check and prevent normal startup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on the QZ-1212 platform. The BMS completed its recognition handshake on first connection and held the charge curve within expected parameters across the initial conditioning cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap self-test protocol:\u003c\/strong\u003e\n    After installing this battery, allow the QZ-1212 to complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this 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\"\u003eDevice not completing boot sequence on new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe QZ-1212 runs a BMS learn cycle during its first few boot sequences with a new cell pack. If the device stalls mid-boot or loops back to the startup screen, the BMS has not yet mapped the new cell's charge profile. This is not a fault with the battery. Connect to mains power, allow a full uninterrupted charge to 16.8V, then power on and let the self-test run to completion without touching the device.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm triggers immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe QZ-1212's battery monitoring circuit uses a charge threshold calibrated to the OEM cell chemistry. A new replacement cell — even fully charged — may report a state-of-charge that sits just below that threshold on the first cycle. This is a calibration mismatch, not a defective battery. Run one complete charge-discharge cycle on the device before clinical use and the alarm will clear as the BMS updates its reference values.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381363638362,"sku":"BWCS-ZRM121MD-1","price":78.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381363671130,"sku":"BWCS-ZRM121MD-2","price":92.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381363703898,"sku":"BWCS-ZRM121MD-3","price":102.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZRM121MD-1.webp?v=1778900304","url":"https:\/\/batteryweb.com\/products\/zoncare-qz-1212-replacement-battery-148v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}