{"product_id":"alcatel-3-replacement-battery-38v-2800mah-li-polymer","title":"Alcatel 3 TLp029D1 Replacement Battery 3.8V 2800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel 3 \/ OT5052D Series — 3.8V Li-Polymer Replacement Battery (TLp029D1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2800mAh Li-Polymer cell for the Alcatel 3, OT5052D, One Touch 3 Dual Sim, and compatible models listed below. It fits where the original TLp029D1 sits, matching the connector, dimensions (70.60 × 57.50 × 4.00mm), and BMS communication protocol. Capacity figure is from the cell spec sheet — 10.64Wh at rated voltage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fitment on the Alcatel 3 platform:\u003c\/strong\u003e\n    The OT5052D, One Touch 3 Dual Sim, and related variants share the same battery bay geometry and 3.8V power rail. The TLp029D1 part number is common across all of them — same connector housing, same BMS handshake signal expected by the charge IC.\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 an Alcatel 3 unit. The BMS accepted the new cell without fault codes, and the charge IC stepped through trickle, CC, and CV phases cleanly. No thermal events or premature cutoff during initial cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after 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 recalibrate against the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell — preventing false percentage readings from the first charge onwards.\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 3 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. Under peak modem load or screen-on draw, the new cell's resting voltage drops faster than the fuel gauge IC predicts — because the gauge is still mapped to the old cell's discharge curve. The phone interprets the voltage sag as a hard low-voltage event and shuts down before the displayed percentage hits zero. One full discharge-to-charge cycle recalibrates the coulomb counter and maps the new cell's curve correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not activating on first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter fitting a new cell, the charge IC may default to standard 5V\/1A input and refuse to negotiate the faster charge profile. This happens because the BMS on the new cell starts in a conservative state until it logs a complete charge cycle and confirms thermal and voltage behaviour is within spec. Plug in via a standard charger for the first full cycle — do not use a fast charger for that initial run. After one complete cycle, the charge IC will accept the higher-current profile on subsequent charges.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391995379802,"sku":"BWCS-OTF508SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391995412570,"sku":"BWCS-OTF508SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391995445338,"sku":"BWCS-OTF508SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OTF508SL-1.webp?v=1779142856","url":"https:\/\/batteryweb.com\/products\/alcatel-3-replacement-battery-38v-2800mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}