About this replacement
Samsung Galaxy A3 2016 — 3.85V Li-ion Replacement Battery (EB-BA310ABE)
This is a 3.85V, 1700mAh Li-ion cell that replaces the original battery in the Samsung Galaxy A3 2016 and Galaxy A3 2016 LTE. It fits SM-A310 and SM-A310Y variants and slots into the same battery bay as the OEM unit. OEM part references are EB-BA310ABE and GH43-04562A.
- SM-A310 series fit: The A3 2016 lineup shares a single battery footprint — 84.60 × 36.95 × 4.70mm — with identical connector placement and BMS pin layout across SM-A310, SM-A310Y, and the LTE variant. The same 3.85V voltage rail and communication protocol runs across all listed models.
- Bench tested on actual hardware: We ran this cell in an SM-A310 unit and confirmed stable BMS handshake at full charge and at low-state discharge. The protection circuit tripped correctly at undervoltage and the charge IC accepted a standard charge profile without errors.
- Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the fuel gauge IC a clean reference cycle against the new cell's discharge curve before high-current charging is applied.
Why the Galaxy A3 2016 reports wrong battery percentage after a cell swap
The A3 2016 uses a coulomb counter inside the fuel gauge IC that was calibrated against the original cell's discharge curve. When you fit a new cell, that stored curve no longer matches the new cell's actual voltage-versus-capacity behaviour. The IC keeps reporting percentages based on old data until it learns the new curve. One full discharge-to-shutdown followed by an uninterrupted charge to 100% resets the reference points the fuel gauge uses. After that cycle, percentage readings track the real state of charge accurately.
Sudden shutdown at 20–30% on the replacement cell
This is a voltage cliff issue, not a capacity fault. Under high-current draw — mobile data radio, screen at full brightness, or intensive app use — the cell voltage sags faster than the fuel gauge predicts, dropping below the BMS cutoff threshold before the displayed percentage reaches zero. A freshly installed cell with an uncalibrated fuel gauge IC is most vulnerable to this on the first few cycles. Run that initial full discharge-charge cycle and the fuel gauge IC will map the sag curve correctly. If shutdowns persist past three full cycles, check that the battery connector is fully seated — a high-resistance connection amplifies voltage sag under load.