{"product_id":"i-mobile-112-replacement-battery-37v-1200mah-li-ion","title":"I-Mobile 112 BL-75 Replacement Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eI-Mobile 112 \/ 213 Series — 3.7V Li-ion Replacement Battery (BL-75)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion cell (4.44Wh) for the I-Mobile 112, 213, 225, and 1200 series smartphones. It replaces OEM part numbers BL-75 and BL-77. If your original battery swells, fails to hold a charge, or shuts down unexpectedly, this cell fits the same bay and connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e112 \/ 213 \/ 225 \/ 1200 compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions (53 × 34 × 5.70mm), voltage rail, and connector pinout — so a single cell covers the full group without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on compatible hardware. The BMS accepted charge from USB without cutoff errors, and cell voltage held within spec under screen-on and call loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before high-current charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the I-Mobile 112 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a learned discharge curve from the old cell. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The phone reads voltage, maps it to the old curve, and reports an inaccurate percentage — often jumping or stalling at fixed values. One full discharge down to automatic shutdown, followed by an uninterrupted charge to 100%, forces the IC to rewrite its reference curve against the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on a freshly installed cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under modem or display load — a voltage cliff the OS percentage reading doesn't anticipate. The phone's low-battery threshold triggers a hard shutdown before the displayed percentage reaches zero. It is not a faulty cell. Run one full calibration cycle as described above, then confirm the shutdown no longer occurs below 3.6V under load. If it persists after two full cycles, check that the connector contacts are seated flush with no debris on the pins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404284428378,"sku":"BWCS-WKL003SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404284461146,"sku":"BWCS-WKL003SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404284493914,"sku":"BWCS-WKL003SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WKL003SL-1.webp?v=1779369617","url":"https:\/\/batteryweb.com\/products\/i-mobile-112-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}