{"product_id":"t-mobile-g2-replacement-battery-37v-1500mah-li-ion","title":"T-Mobile G2 Replacement Battery BA S450 3.7V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eT-Mobile G2 — 3.7V Li-ion Replacement Battery (BA S450)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1500mAh Li-ion replacement battery for the T-Mobile G2 smartphone. It fits the G2 directly and uses OEM part numbers BA S450, 35H00140-00M, and 35H00140-01M. Replace this battery when the original cell no longer holds adequate charge or fails to power the device.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT-Mobile G2 fit:\u003c\/strong\u003e\n    The G2 uses a dedicated battery bay sized for this 65 x 43 x 5mm cell. The connector and BMS handshake are matched to the phone's charge IC — no adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on the G2 platform. The BMS communicated correctly with the phone's fuel gauge IC, and charge termination triggered at the correct cutoff voltage without fault flags.\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. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging is applied to 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\"\u003eSudden shutdown at 20–30% on the T-Mobile G2 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe G2's fuel gauge IC holds a discharge curve learned from the original cell. A new cell has a different internal resistance profile, so the gauge miscalculates remaining capacity. Under modem or screen load, the cell voltage drops faster than the gauge predicts and the phone shuts off to protect the BMS — even though the reported percentage looked safe. One full discharge-charge cycle forces the coulomb counter to relearn the new cell's voltage-to-capacity curve and eliminates premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge over time in storage. If the cell drops below approximately 2.5V, the BMS enters lockout mode and the phone will not power on — even with a charger connected. Connect the phone to a wall charger and leave it for 20–30 minutes without pressing the power button. The charge IC needs time to trickle-charge the cell back above the BMS wake threshold before a normal boot is possible.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405026459738,"sku":"BWCS-HT7272ML-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405026492506,"sku":"BWCS-HT7272ML-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405026525274,"sku":"BWCS-HT7272ML-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HT7272ML-1.webp?v=1779369841","url":"https:\/\/batteryweb.com\/products\/t-mobile-g2-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}