{"product_id":"motorola-moto-e7-replacement-battery-38v-3350mah-li-polymer","title":"Motorola LC40 Moto E7 Compatible Battery 3.8V 3350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola Moto E7 \/ Moto E 2020 — 3.8V Li-Polymer Replacement Battery (LC40)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 3350mAh Li-Polymer replacement battery for the Motorola Moto E7 and Moto E 2020 (XT2052DL, XT2052-1). It fits directly in place of the original LC40 cell when the factory battery no longer holds adequate charge. Capacity figures come from the product data — 3350mAh, 12.73Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXT2052 series compatibility:\u003c\/strong\u003e\n    The XT2052DL and XT2052-1 share the same battery bay dimensions, connector pinout, and BMS handshake protocol as the standard Moto E7. All variants in this lineup accept the LC40 cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an XT2052 unit and confirmed the BMS accepted the new cell, initialised charge control, and stepped through CC\/CV phases without error flags or thermal shutdown events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to auto-shutdown, then charge uninterrupted to 100% before resuming normal use. This gives the coulomb counter a clean reference point against the new cell's discharge curve.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Moto E7 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the XT2052 uses a stored discharge curve built from the original cell's impedance profile. A new LC40 cell has different internal resistance, so the IC's state-of-charge estimate drifts immediately. This shows up as percentage jumps, premature low-battery warnings, or the indicator sticking at one value for long stretches. One full discharge-charge cycle lets the coulomb counter re-anchor its model to the replacement cell and restores accurate reporting.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the modem or display draws a current spike that drops cell voltage below the BMS cutoff threshold — even though the reported percentage reads higher. A fresh cell with an uncalibrated fuel gauge is especially prone to this because the IC cannot predict the voltage cliff accurately. The fix is the same recalibration cycle: full discharge to shutdown, then a complete uninterrupted charge. After that cycle, the BMS has an accurate low-voltage floor mapped to this specific cell and should hold the charge curve past 3.5V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391898812506,"sku":"BWCS-MOE205SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391898845274,"sku":"BWCS-MOE205SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391898878042,"sku":"BWCS-MOE205SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MOE205SL-1.webp?v=1779142596","url":"https:\/\/batteryweb.com\/products\/motorola-moto-e7-replacement-battery-38v-3350mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}