{"product_id":"samsung-sm-a8000-replacement-battery-38v-3050mah-li-polymer","title":"EB-BA800ABE Samsung Galaxy A8 Replacement Battery 3.8V 3050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy A8 SM-A8000 Series — 3.8V Li-Polymer Replacement Battery (EB-BA800ABE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 3050mAh lithium-polymer replacement cell for the Samsung Galaxy A8 (SM-A8000), including SM-A800F, SM-A800YZ, and Galaxy A8 Duos variants. It replaces OEM part EB-BA800ABE and matches the original connector, footprint, and BMS communication protocol. Capacity and voltage figures are taken directly from the cell specification — 11.59Wh total.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSM-A8000 platform fitment:\u003c\/strong\u003e\n    All listed A8 variants share the same battery bay geometry, flex connector pinout, and fuel gauge IC interface. One cell specification covers the full SM-A800 lineup without modification to the connector or BMS handshake logic.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge termination on an SM-A800F unit. The BMS accepted the charge IC handshake, terminated cleanly at 4.35V, and did not trigger protection cutoff during a controlled discharge sweep through the modem-active load profile.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The A8's fuel gauge IC uses a coulomb counter calibrated to the previous cell's discharge curve. Skipping this step causes the reported percentage to drift against the new cell's actual state of charge.\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 SM-A8000 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff failure, not a capacity problem. The A8's Exynos SoC and modem draw a combined current spike under LTE load that a partially calibrated or aged cell cannot sustain without the terminal voltage collapsing below the BMS cutoff threshold — even when the fuel gauge still reads 25%. The BMS trips the cell before the OS can react, causing a hard shutdown. After fitting the replacement, run one full discharge cycle with mobile data active so the coulomb counter maps the new cell's voltage-versus-capacity curve accurately. The shutdowns typically stop once the fuel gauge IC has completed that first calibration pass.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shows incorrect battery percentage after replacing EB-BA800ABE\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Galaxy A8 stores learned discharge data in the fuel gauge IC — not in the battery itself. When a new cell is installed, that stored curve no longer matches the new cell's actual electrochemistry, so the reported percentage can jump, stall, or read 100% when the cell is not fully charged. The fix is a single full discharge down to automatic shutdown, followed by a full charge to 4.35V with fast charging off. Once that cycle completes, the coulomb counter resets its reference and percentage readings stabilise against the new cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404163842138,"sku":"BWCS-SMA810SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404163874906,"sku":"BWCS-SMA810SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404163907674,"sku":"BWCS-SMA810SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMA810SL-1.webp?v=1779369270","url":"https:\/\/batteryweb.com\/products\/samsung-sm-a8000-replacement-battery-38v-3050mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}