{"product_id":"motorola-one-replacement-battery-38v-2900mah-li-polymer","title":"JE40 Motorola One Compatible Battery 3.8V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola One \/ P30 Play Series — 3.8V Li-Polymer Replacement Battery (JE40)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe JE40 is a 3.8V, 2900mAh Li-Polymer cell that fits the Motorola One, P30 Play, P30 Play Dual SIM, and related variants. It powers the display, processor, and cellular radio. This listing covers the direct replacement for the original Motorola JE40 cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOne and P30 Play platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The JE40 cell measures 73.25 × 61.64 × 3.76mm — physical clearance is tight, so any swollen original cell needs full removal before fitting this replacement.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the JE40 through charge and discharge cycles on P30 Play hardware. The BMS accepted the cell without fault codes, and the fuel gauge IC tracked state-of-charge correctly after one full calibration cycle.\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 for one complete discharge-charge cycle. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current charging begins on an uncalibrated reference.\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 Motorola One after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell has a slightly different voltage-versus-capacity curve than the aged cell the fuel gauge IC was calibrated to. When the phone hits a load spike — LTE handoff, screen-on burst — the cell voltage drops faster than the IC predicts, triggering a low-voltage shutdown even though the displayed percentage reads 20–30%. One full discharge to auto-off followed by an uninterrupted charge to 100% resets the coulomb counter. After that cycle, shutdowns at partial charge should stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not working on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Motorola One uses a TurboPower handshake between the charge IC and the battery BMS. On the first connection after a cell swap, the BMS may respond with a trickle-charge-only signal until it confirms cell integrity. This is normal — the phone will accept only standard 5V charging on cycle one. Plug into a TurboPower adapter after completing that first full charge cycle and the fast-charge handshake should resume at the expected voltage step.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392017236058,"sku":"BWCS-MXT196XL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392017268826,"sku":"BWCS-MXT196XL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392017301594,"sku":"BWCS-MXT196XL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MXT196XL-1.webp?v=1779142904","url":"https:\/\/batteryweb.com\/products\/motorola-one-replacement-battery-38v-2900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}