{"product_id":"dell-studio-xps-16-replacement-battery-111v-4400mah-li-ion","title":"Dell Studio XPS 16 11.1V Replacement Battery 312-0815 48.84Wh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDell Studio XPS 16 — 11.1V Li-ion Replacement Battery (312-0815)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh Li-ion replacement battery for the Dell Studio XPS 16, Studio XPS 1640, Studio XPS M1640, and Studio XPS 16 1647. It replaces OEM parts 312-0815, X411C, W303C, U011C, 312-0814, and W298C. If your original battery no longer holds charge or has failed entirely, this cell restores unplugged use to the notebook.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStudio XPS 16 series fit:\u003c\/strong\u003e\n    The 1640 and 1647 share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers both board revisions 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 a Studio XPS 1640 and confirmed the BMS completed charge handshake, reported state-of-charge correctly to the OS, and held voltage under combined CPU and GPU load without triggering protection cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install discharge cycle on the Studio XPS 16:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to hibernate-cutoff then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery health as poor after replacing the cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Studio XPS BIOS reads battery health from EEPROM data stored on the battery's fuel gauge IC. When a new cell is installed, that EEPROM carries factory baseline figures — not values calibrated to your specific board. The BIOS compares current state against the old cell's learned data and flags a mismatch as degraded health. Running two full discharge-to-hibernate and uninterrupted charge cycles gives the fuel gauge IC enough data to overwrite those baseline figures with accurate readings.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on the meter\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't yet calibrated against the new cell's actual voltage curve. The OS reads a fuel gauge estimate, not live cell voltage — so the percentage shown can be several points higher than the real remaining capacity. Under full CPU and display load, the cell hits its low-voltage cutoff before the meter reaches zero. Run two complete discharge cycles to calibrate the gauge; after that, shutdowns should align with 5% or below.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410806571098,"sku":"BWCS-DE1640NB-1","price":74.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410806603866,"sku":"BWCS-DE1640NB-2","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410806636634,"sku":"BWCS-DE1640NB-3","price":95.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DE1640NB-1.webp?v=1779581142","url":"https:\/\/batteryweb.com\/products\/dell-studio-xps-16-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}