{"product_id":"samsung-galaxy-alpha-replacement-battery-385v-1860mah-li-ion","title":"EB-BG850BBE Samsung Galaxy Alpha Replacement Battery 3.85V 1860mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy Alpha SM-G850 Series — 3.85V Li-ion Replacement Battery (EB-BG850BBE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V Li-ion cell rated at 1860mAh (7.16Wh), built as a direct swap for the Samsung Galaxy Alpha. It fits SM-G850, SM-G850F, SM-G850T, and related variants that share the EB-BG850BBE battery footprint. Install it when the original cell no longer holds charge through a normal day of calls, messaging, and app use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSM-G850 series compatibility:\u003c\/strong\u003e\n    These models share the same 3.85V battery bay, connector pinout, and BMS handshake. The EB-BG850BBE, EB-BG850BBC, and EB-BG850BBU part numbers are interchangeable across this line — Samsung used all three OEM codes for the same physical cell.\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 SM-G850F platform. The BMS handshake completed on first boot, charge current ramped correctly through CC\/CV stages, and the protection circuit tripped as expected at low-voltage cutoff.\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 complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before the charge IC pushes higher current 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 Galaxy Alpha after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Alpha's fuel gauge IC stores a discharge curve calibrated to the old cell. A new cell with a different internal resistance profile hits voltage cliffs at different state-of-charge points. When the modem fires up for a call or the screen brightness spikes, current draw pulls the terminal voltage below the BMS cutoff threshold even though the percentage readout still shows 20–30%. The fix is one full uninterrupted discharge to auto-off, followed by a full charge — this recalibrates the coulomb counter against the actual cell curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGalaxy Alpha not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage, and if the cell drops below roughly 2.5V the BMS enters lockout to prevent damage from deep discharge. The phone will show nothing on screen — no charge indicator, no vibration. Connect the original Samsung charger and leave it for 15–20 minutes before attempting to power on; the charge IC needs to trickle current into the cell until voltage clears the BMS re-enable threshold before normal charging begins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404227838042,"sku":"BWCS-SMG850XL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404227870810,"sku":"BWCS-SMG850XL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404227903578,"sku":"BWCS-SMG850XL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMG850XL-1.webp?v=1779369425","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-alpha-replacement-battery-385v-1860mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}