BAT-P10 Acer Liquid E700 Compatible Battery 3.8V 3000mAh

Acer Liquid E700 — 3.8V Li-Polymer Replacement Battery (BAT-P10)

This is a 3.8V, 3000mAh lithium-polymer replacement battery for the Acer Liquid E700, Liquid E700 Triple, and E39 smartphones. It replaces OEM part BAT-P10 and shares the same cell footprint and BMS pinout as the factory unit. Capacity figures come from the product specification — 3000mAh / 11.4Wh.

• Liquid E700 / E700 Triple / E39 fitment: All three models share the same battery bay dimensions and connector, so one cell covers the full variant range. The BMS handshake and voltage rail are identical across the trio — no adapter or modification needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the E700 platform. The BMS communicated correctly with the charge IC, accepted the full charge curve to 4.35V, and released current cleanly under screen-on load.
• Fuel gauge recalibration on first use: Disable fast charging for the first complete discharge-charge cycle after installation. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.

Sudden shutdown at 20–30% on the Liquid E700

This happens when the cell voltage drops below the modem's minimum operating threshold under load — typically around 3.5V — even though the fuel gauge still reads 20–30%. The root cause is a coulomb counter calibrated to the old, degraded cell curve. The new cell has a steeper voltage cliff at low state-of-charge, which catches the phone off guard. One full discharge to automatic shutdown followed by a full uninterrupted charge resets the reference curve and eliminates the false cutoff.

OS percentage jumping erratically after cell swap

After a cell replacement, the fuel gauge IC still holds the discharge model it built for the old battery. When it measures the new cell's voltage, the lookup table returns wrong state-of-charge figures — producing jumps of 10–15% in either direction. This is not a fault with the replacement cell. Run two full discharge-charge cycles without interruption and the IC rebuilds its model against the actual new cell behaviour. By cycle three, percentage readings stabilise.