{"product_id":"alcatel-one-touch-pixi-3-7-replacement-battery-38v-4000mah-li-polymer","title":"TLP040D2 Alcatel One Touch Pixi 3 7 Compatible Battery 3.8V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel One Touch Pixi 3 7 — 3.8V Li-Polymer Replacement Battery (TLP040D2)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 4000mAh (15.2Wh) lithium-polymer battery replaces the TLP040D2 cell in the Alcatel One Touch Pixi 3 7 tablet, covering models 9007T and OT-9007. The original cell degrades through repeated shallow cycling — this replacement restores full charge capacity to the 7-inch tablet. Dimensions are 100.80 × 76.70 × 3.70 mm, matching the stock cell footprint.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e9007T and OT-9007 compatibility:\u003c\/strong\u003e\n    Both variants share the same battery bay dimensions, 3.8V nominal voltage rail, and TLP040D2 connector pinout — the BMS handshake passes without modification on either board revision.\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 the OT-9007 board. The BMS accepted the new cell without flag errors, and the charge IC reached full cutoff voltage cleanly at 4.35V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast-charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC is calibrated to the old cell's discharge curve — running one full cycle at standard current lets it recalibrate before high-current charging pushes 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\"\u003eSudden shutdown at 20–30% on the Pixi 3 7 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Pixi 3 7 fuel gauge IC holds a discharge curve learned from the original cell. When a new cell is installed, that stored curve no longer matches the actual voltage-versus-capacity profile of the replacement. Under screen backlight or network load, the cell voltage drops faster than the IC expects, crossing the low-voltage cutoff threshold well before the reported percentage hits zero. One full discharge-to-shutdown followed by an uninterrupted charge to 100% forces the coulomb counter to resync against the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the OT-9007 after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eErratic percentage readings — jumping from 45% to 60% or dropping 15 points in seconds — point to the fuel gauge IC recalibrating against a cell it has never seen before. The IC uses accumulated charge and discharge data to estimate state-of-charge; with a new cell, that data is stale and produces unstable readings. This is not a fault with the replacement cell itself. Let the tablet complete two full discharge-charge cycles without interruption and the reported percentage will stabilise.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392076611674,"sku":"BWCS-OTP907XL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392076644442,"sku":"BWCS-OTP907XL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392076677210,"sku":"BWCS-OTP907XL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OTP907XL-1.webp?v=1779143639","url":"https:\/\/batteryweb.com\/products\/alcatel-one-touch-pixi-3-7-replacement-battery-38v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}