Samsung Galaxy A20e EB-BA202ABU Replacement Battery 3.85V 2950mAh

Samsung Galaxy A20e — 3.85V Li-Polymer Replacement Battery (EB-BA202ABU)

This is a 3.85V, 2950mAh Li-Polymer cell built to the same electrical spec as the factory EB-BA202ABU fitted in the Galaxy A20e. It fits the SM-A202, SM-A202F/DS, SM-A202J, and related variants. If your A20e drains fast, shuts down unexpectedly, or won't hold a charge, this is the cell to swap.

• A20e battery family: All SM-A202 variants — regardless of regional suffix — share the same battery bay dimensions, connector orientation, and BMS handshake protocol. One cell fits the whole range without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on an SM-A202F/DS. The BMS accepted charge from both USB-C standard and fast-charge protocols. Cutoff voltages triggered correctly at the high and low ends — 4.35V charge ceiling, 3.0V discharge floor.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell — preventing the erratic percentage readings common after a cell swap.

Sudden shutdown at 20–30% on the A20e after a cell swap

This happens because the phone's fuel gauge IC still holds the discharge curve from the old, degraded cell. When the new cell hits a voltage point the IC associates with near-empty — typically around 3.5–3.6V under load — it triggers an emergency shutdown before the cell is actually depleted. The fix is one full uninterrupted discharge-to-shutdown followed by a full charge with fast charging disabled. After that cycle, the coulomb counter resets against the new cell's actual curve and percentage reporting stabilises.

USB fast charging not working on the first cycle after replacement

Some A20e units don't negotiate fast-charge protocols with a freshly installed cell on the first cycle. The charge IC treats a new, high-impedance cell cautiously and defaults to standard 5V/1A input until it has logged one charge cycle. Plug into a USB-C charger and let it complete a full standard charge — don't interrupt it. On the second cycle, fast charging resumes at the normal negotiated rate.