{"product_id":"alcatel-u3-2018-4g-replacement-battery-385v-1550mah-li-ion","title":"Alcatel TLi016D7 Replacement Battery 3.85V 1550mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel U3 2018 4G \/ OT-4055U \/ OT-4055J — 3.85V Li-ion Replacement Battery (TLi016D7)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 1550mAh (5.97Wh) Li-ion replacement battery for the Alcatel U3 2018 4G, OT-4055U, and OT-4055J smartphones. It replaces the OEM part TLi016D7 directly. Fit this battery when the original cell no longer holds a charge or the phone shuts down unexpectedly under load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOT-4055U and OT-4055J platform fit:\u003c\/strong\u003e\n    Both model variants use the same 3.85V voltage rail, connector pinout, and BMS handshake protocol — one battery covers the full OT-4055 range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles on the OT-4055U. The BMS accepted charge current correctly, thermal thresholds tripped at expected temperatures, and the protection circuit responded normally to simulated load spikes from the modem and display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    Disable fast charging for the first full discharge-charge cycle after fitting this battery. The fuel gauge IC on the U3 2018 4G calibrates its coulomb counter against the cell's discharge curve — running a slow cycle first prevents the percentage readings from drifting during early use.\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 Alcatel U3 2018 4G\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe OT-4055 modem and display pull current spikes that a worn or deeply cycled cell cannot sustain. When cell voltage drops below roughly 3.5V under that instantaneous load, the BMS cuts output to protect the cell — even if the OS still reads 25% on the gauge. A fresh TLi016D7 cell has lower internal resistance and holds voltage through those spikes. After fitting the replacement, run one full discharge-charge cycle so the fuel gauge IC maps the new cell's actual voltage curve before reporting percentages to Android.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone not powering on after the battery sat discharged in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells stored at or below 2.5V trigger a BMS lockout that blocks normal charging. The U3 2018 4G charger will show no charging indicator when this happens. Connect the phone to a USB charger and leave it for 15–20 minutes without pressing the power button — the charge IC trickle-charges the cell from below the lockout threshold before the BMS re-enables full current flow. Once the cell recovers to approximately 3.0V, the phone will power on and charge normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391842746458,"sku":"BWCS-OTH405SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391842779226,"sku":"BWCS-OTH405SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391842811994,"sku":"BWCS-OTH405SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OTH405SL-1.webp?v=1779142388","url":"https:\/\/batteryweb.com\/products\/alcatel-u3-2018-4g-replacement-battery-385v-1550mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}