Acer Liquid Mini 3.7V Replacement Battery BT.0010S.005

Acer Liquid Mini / E310 / Liquid Express — 3.7V Li-ion Replacement Battery (BT.0010S.005)

This 3.7V, 1300mAh Li-ion cell replaces the original battery in the Acer Liquid Mini, E310, Liquid Express, E320, and compatible models. It matches the OEM dimensions at 65.50 × 42.00 × 4.50mm and uses OEM part numbers BT.0010S.005, BAT-310, and BT.0010S.002. Fit this when the original cell no longer holds a usable charge through a normal day.

• Liquid Mini / E310 / E320 platform fit: These models share the same battery bay dimensions, 3.7V single-cell architecture, and connector pinout — one cell covers the full group without modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Liquid Mini platform. The BMS held charge termination correctly and protection circuits tripped at expected over-discharge thresholds without false cutoffs mid-cycle.
• Fuel gauge recalibration on first use: After fitting this cell, run one full discharge to automatic shutdown and a full uninterrupted charge before relying on the percentage reading. The Liquid Mini's fuel gauge IC carries calibration data from the old cell — one complete cycle overwrites it against the new discharge curve.

Sudden shutdown at 20–30% on the Acer Liquid Mini after a cell swap

The Liquid Mini's modem and display together pull enough current during peak load to expose the voltage cliff on a new, uncalibrated cell. When the fuel gauge IC still maps to the old cell's discharge curve, it reads 25% remaining while the actual cell voltage has already dropped below what the SoC needs to stay on. The phone cuts out even though the gauge shows charge remaining. One full discharge-to-shutdown and charge-to-100% cycle resets the coulomb counter and eliminates most of these early shutdowns.

Phone won't power on after the replacement battery sat in storage

Li-ion cells self-discharge in storage, and if this cell sat below 2.5V before installation, the BMS lockout circuit will block normal startup to protect the cell from damage. Plugging into a charger and waiting five to ten minutes at the lock screen — without pressing the power button repeatedly — lets the charge IC push enough current in to clear the BMS threshold. If the screen stays dark, hold the charge cable steady for a full 15 minutes before attempting a power-on; the cell needs to reach approximately 3.0V before the BMS releases.