Samsung Galaxy S6 EB-BG920ABE Replacement Battery 3.85V 2550mAh

Samsung Galaxy S6 — 3.85V Li-Polymer Replacement Battery (EB-BG920ABE)

This is a 3.85V, 2550mAh Li-Polymer battery replacing part number EB-BG920ABE in the Samsung Galaxy S6. It fits the SM-G920F, SM-G920, SM-G9200, and over 22 additional S6 variants. The cell dimensions are 96.26 × 44.50 × 3.72mm — the same footprint as the original.

• S6 platform compatibility: All SM-G920 variants share the same battery bay geometry, flex connector pinout, and BMS handshake protocol. This battery carries both GH43-04413A and GH43-04413B part numbers, covering both the original and revised connector revisions Samsung used across S6 production runs.
• Bench tested on actual hardware: We ran this cell in an SM-G920F through charge and discharge cycles. The BMS communicated correctly with the PMIC, charge current stepped down at the expected voltage threshold, and no thermal flags were triggered during the test.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before the system applies high-current fast charging to an uncalibrated cell.

Sudden shutdown at 20–30% on the Galaxy S6 after a cell swap

The S6's fuel gauge IC holds a learned discharge curve from the old cell in non-volatile memory. When a new cell is installed, the stored curve no longer matches the actual voltage-versus-capacity relationship of the replacement. Under high-current loads — LTE radio, display at full brightness, GPS — the new cell's voltage drops faster than the IC predicts, triggering an emergency shutdown before the reported percentage reaches zero. One full discharge-charge cycle with no fast charging clears the cached curve and lets the coulomb counter reset against real cell data.

Phone warm near the battery during the first charge after replacement

A new Li-Polymer cell has higher internal impedance than a used one. The S6's charge IC does not immediately lower its current delivery to compensate, so more energy converts to heat in the first charge session. This is normal and typically resolves after the first full cycle as impedance drops with initial conditioning. If warmth continues beyond the first cycle, check that the battery contacts are fully seated and the flex connector is locked flat — a partially connected cell forces the IC to work harder against added resistance.