{"product_id":"mtc-android-replacement-battery-37v-1100mah-li-ion","title":"MTC Android Evo Replacement Battery 3.7V 1100mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMTC Android \/ Evo — 3.7V Li-ion 1100mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis MTC battery is a 3.7V Li-ion cell rated at 1100mAh (4.07Wh), measuring 54.05 × 34.10 × 5.40mm. It fits Android and Evo smartphones where the original cell has degraded or failed. Match your device's physical dimensions before ordering — model naming across Android variants is inconsistent.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAndroid \/ Evo platform fit:\u003c\/strong\u003e\n    These models share a common cell footprint and voltage rail at 3.7V nominal. The connector pinout and BMS communication protocol are consistent across this battery family, which is why one cell covers both designations.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on compatible hardware. The BMS held cutoff at the correct upper limit and did not trip on a standard 500mA charge current. Coulomb counter readings stabilised after the first full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The fuel gauge IC is calibrated to the old cell's discharge curve — one full cycle lets it map the new cell before high-current charging is applied to an uncalibrated reference.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the phone reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on these devices uses a coulomb counter trained on the original cell's discharge curve. When a new cell goes in, that curve no longer matches — so the IC reports percentage against the wrong reference. The phone may show 40% and shut down, or jump from 80% to 20% without warning. One full discharge-to-charge cycle with fast charging off resets the counter against the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% charge remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff symptom, not a capacity problem. Under high-draw loads — active modem, screen at full brightness, GPS — the cell voltage sags below the BMS protection threshold before the fuel gauge reaches 0%. The BMS cuts power immediately to prevent cell damage. If this happens consistently above 20%, run a full calibration cycle first. If it persists, check that the cell connector is fully seated — a loose pin increases internal resistance and worsens voltage sag under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405087866970,"sku":"BWCS-HUM750XL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405087899738,"sku":"BWCS-HUM750XL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405087932506,"sku":"BWCS-HUM750XL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUM750XL-1.webp?v=1779369956","url":"https:\/\/batteryweb.com\/products\/mtc-android-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}