{"product_id":"motorola-moto-one-zoom-replacement-battery-385v-3900mah-li-polymer","title":"Motorola KP50 Moto One Zoom Replacement Battery 3.85V 3900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola Moto One Zoom — 3.85V Li-Polymer Replacement Battery (KP50)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe KP50 is a 3900mAh Li-Polymer cell at 3.85V, built as a direct replacement for the Motorola Moto One Zoom and its global variants including the XT2010-1. If your phone no longer holds charge or shuts down unexpectedly before the battery indicator reaches zero, the original cell has degraded and needs replacing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMoto One Zoom and XT2010 variants:\u003c\/strong\u003e\n    All listed variants — Moto One Zoom, Moto One Zoom Global, and XT2010-1 — share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One cell covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on the Moto One Zoom platform. The BMS accepted the KP50 without triggering a charge fault, and the fuel gauge IC initialised correctly after one complete cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst cycle after installation:\u003c\/strong\u003e\n    Disable fast charging for the first complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's actual discharge curve before high-current charging is applied to 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 Moto One Zoom after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still reading from the old cell's discharge curve stored in memory. The new cell hits a voltage cliff under modem or display load at a state-of-charge the gauge thinks is safe. The phone's processor sees the rail drop below its minimum threshold and cuts power before the percentage reaches zero. One full discharge-charge cycle without fast charging forces the coulomb counter to remap against the new cell's actual voltage curve and eliminates the premature cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not engaging on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge after installing a new cell, the charge IC may not negotiate fast charge protocols until it has completed at least one slow trickle-to-full cycle. The BMS uses the initial cycle to set internal resistance baselines and verify cell health before allowing high-current input. Charging at standard speed for the first full cycle is the fix. After that cycle completes, fast charging will engage normally on subsequent connections.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391995576410,"sku":"BWCS-MXP500SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391995609178,"sku":"BWCS-MXP500SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391995641946,"sku":"BWCS-MXP500SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MXP500SL-1.webp?v=1779142855","url":"https:\/\/batteryweb.com\/products\/motorola-moto-one-zoom-replacement-battery-385v-3900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}