{"product_id":"samsung-baffin-replacement-battery-38v-2100mah-li-ion","title":"Samsung Galaxy S III Replacement Battery EB-L1G6LLZ 3.8V 2100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy S III \/ Baffin — 3.8V Li-ion Replacement Battery (EB-L1G6LLZ)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 2100mAh Li-ion cell that replaces the original battery in the Samsung Galaxy S III, Galaxy S III LTE, Baffin, and 27 additional compatible variants. It matches the original connector pinout and BMS handshake profile. Voltage and physical dimensions — 63.00 × 50.40 × 5.40mm — are identical to the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGalaxy S III family compatibility:\u003c\/strong\u003e\n    The S III platform — including LTE and regional Baffin variants — shares a single battery bay with identical connector orientation and the same 3.8V nominal rail. 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-discharge cycles on a Galaxy S III unit. The BMS accepted the handshake on first connection, charge current ramped correctly, and the fuel gauge IC began tracking without manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging begins pushing into an uncalibrated baseline.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Galaxy S III reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Galaxy S III uses a coulomb-counting fuel gauge IC that builds its charge model against the original cell's impedance and capacity curve. When a new cell goes in, the IC is still referencing the old degraded curve, so reported percentages are off — sometimes significantly. The fix is one full uninterrupted discharge down to automatic shutoff, followed by a full charge to 100% without interruption. After that cycle, the IC resets its reference points against the new cell and percentage reporting stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% remaining on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't completed recalibration and the cell hits a voltage cliff under modem or display load. At high current draw, the uncalibrated cell drops below the 3.2V cutoff threshold faster than the IC predicts, triggering an emergency shutdown before the displayed percentage reaches zero. It is not a faulty cell — it is a calibration gap. Run the full discharge-charge recalibration cycle described above, and monitor resting voltage after shutdown: a healthy cell should read between 3.5V and 3.7V at the point of cutoff.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404327059546,"sku":"BWCS-SMI535XL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404327092314,"sku":"BWCS-SMI535XL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404327125082,"sku":"BWCS-SMI535XL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMI535XL-1.webp?v=1779369778","url":"https:\/\/batteryweb.com\/products\/samsung-baffin-replacement-battery-38v-2100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}