Samsung Galaxy S5 EB-BG900BBC Replacement Battery 3.85V 2800mAh

Samsung Galaxy S5 — 3.85V Li-ion Replacement Battery (EB-BG900BBC)

This is a 2800mAh, 3.85V lithium-ion cell replacing the original battery in the Samsung Galaxy S5 and its regional variants — including the GT-I9600, GT-I9602, and GT-I9700. It slots directly into the removable battery bay and connects via the standard three-contact BMS interface on all S5 hardware revisions. OEM part numbers EB-B900BBE, EB-B900BBK, EB-B900BBC, EB-B900BBU, GH43-04165A, and GH43-04199A all cross-reference to this cell.

• S5 variant compatibility: The GT-I9600, GT-I9602, GT-I9700, and all other S5-platform models share the same battery bay dimensions, contact pitch, and BMS handshake protocol — a single cell spec covers the entire lineup without modification.
• Bench tested on actual hardware: We ran this cell on a GT-I9600 unit. The BMS accepted charge on first insertion, the fuel gauge IC registered cell voltage within two minutes, and the charge IC stepped through trickle, constant-current, and constant-voltage phases without error flags.
• Fuel gauge recalibration on first use: Disable Samsung's fast charging in Settings before the first complete discharge-charge cycle. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current charging pushes current into an uncalibrated coulomb counter.

Sudden shutdown at 20–30% on the Galaxy S5 after a cell swap

The S5's fuel gauge IC stores a discharge curve calibrated to the original cell. A new cell with a different internal impedance profile means the IC's voltage-to-percentage mapping is wrong from the start. When the modem fires a transmission burst or the screen peaks at full brightness, current draw spikes and the new cell's voltage sags below the shutdown threshold — even though the reported percentage says 25%. One full discharge to auto-off followed by an uninterrupted charge to 100% lets the coulomb counter reset its end-of-discharge voltage reference to the new cell's actual curve.

Phone not powering on after the replacement cell sat in storage

Li-ion cells self-discharge in storage, and if this battery sat below 2.5V per cell before installation, the BMS trips into lockout mode and blocks charge input entirely — the phone shows nothing when connected to a charger. Connect the phone to a wall adapter rated at least 5V/1A and leave it undisturbed for 20–30 minutes. The charge IC delivers a low-current trickle that raises cell voltage above the BMS recovery threshold, typically around 2.8V, at which point the BMS re-enables full charge current and the phone boots normally.