{"product_id":"mwg-atom-v-replacement-battery-37v-1350mah-li-ion","title":"XP-13 MWG Atom V Replacement Battery 3.7V 1350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMWG Atom V — 3.7V Li-ion Replacement Battery (XP-13)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1350mAh Li-ion cell built to replace the OEM XP-13 battery in the MWG Atom V smartphone. It restores power to the device after the original cell has degraded, lost capacity, or stopped holding a charge. Voltage and capacity match the original spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMWG Atom V fit:\u003c\/strong\u003e\n    The Atom V uses a 3.7V single-cell Li-ion architecture with a direct connector match to the XP-13 footprint. The replacement cell shares the same 64.44 × 38.58 × 5.72mm dimensions, so it seats flush in the battery bay without modification.\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 a controlled rig. The BMS accepted a standard 1C charge rate, voltage peaked at 4.2V at full charge, and the protection circuit tripped correctly at the low-voltage cutoff threshold — no anomalous behaviour at either end.\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 and run one full discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's actual discharge curve before any high-current session pushes charge 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 Atom V after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC still holds the discharge curve from the old, degraded cell. When the new cell hits a voltage point the IC associates with a lower state of charge, it calls a shutdown early. The phone cuts out even though usable capacity remains in the cell. One full discharge-charge cycle at standard rate forces the coulomb counter to re-anchor against the new cell's actual voltage cliff — typically around 3.5V under modem load on the Atom V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMWG Atom V shows erratic percentage jumps after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eErratic percentage readings — jumping from 45% to 61% or dropping 10% in seconds — point to a fuel gauge IC that has not yet characterised the new cell. The IC uses stored data from the previous cell's impedance profile, and a fresh cell with different internal resistance throws those estimates off. This is not a fault in the replacement cell. Run two complete discharge-charge cycles without fast charging and the gauge will stabilise as it builds an accurate impedance model for the new cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405162348634,"sku":"BWCS-MWV1SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405162381402,"sku":"BWCS-MWV1SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405162414170,"sku":"BWCS-MWV1SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MWV1SL-1.webp?v=1779370333","url":"https:\/\/batteryweb.com\/products\/mwg-atom-v-replacement-battery-37v-1350mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}