Samsung Galaxy A14 5G Replacement Battery EB-BA146ABY 3.85V

Samsung Galaxy A14 5G — 3.85V Li-Polymer Replacement Battery (EB-BA146ABY)

This 3.85V, 4900mAh (18.87Wh) Li-Polymer cell replaces the original EB-BA146ABY battery in the Samsung Galaxy A14 5G (SM-A146M, SM-A146M/DS, Galaxy A14 5G 2023). It fits the slot directly and mates with the same BMS connector as the factory cell. Swap it in when the original no longer holds a charge or the phone refuses to power on.

• SM-A146M series compatibility: All SM-A146M variants share the same 3.85V voltage rail, connector pinout, and BMS handshake protocol — that is why a single cell covers the full variant list, including dual-SIM models.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on an SM-A146M unit. The BMS accepted the cell without fault codes, fast-charge handshake completed on the second cycle, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• First-cycle calibration tip: After installation, disable fast charging in Settings and run one full discharge-to-charge cycle at standard speed. This forces the fuel gauge IC to map its coulomb counter against the new cell's discharge curve before high-current charging pushes load into an uncalibrated state.

Why the Galaxy A14 5G reports wrong battery percentage after a cell swap

The fuel gauge IC on the A14 5G builds its percentage model from the discharge curve of the cell it was calibrated against — the original factory cell. When you install a new cell, that learned curve no longer matches. The IC is reading voltage and inferring capacity from stale data. One complete discharge cycle from 100% down to automatic shutdown, followed by a full charge to 100%, forces the coulomb counter to relearn the new cell's actual curve. After that cycle, reported percentages will track real remaining capacity accurately.

Sudden shutdown at 20–30% on the new cell

This happens when the modem or display draws a high current burst and the cell voltage drops sharply below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. It is a voltage cliff, not a capacity problem. A fresh Li-Polymer cell has slightly higher internal impedance in the first few cycles, which makes the voltage sag steeper under load. Run two or three full charge-discharge cycles and the impedance settles; the BMS cutoff should stop triggering above 15%. If shutdowns continue past cycle three, check that the battery connector is fully seated — a half-latched connector raises contact resistance and deepens the voltage sag to the same effect.