Acer Liquid Jade S Compatible Battery 3.8V 1900mAh BAT-D10

Acer Liquid Jade S / Z Series — 3.8V Li-Polymer Replacement Battery (BAT-D10)

This 3.8V Li-Polymer cell replaces the original BAT-D10 battery in the Acer Liquid Jade S (S56) and Liquid Jade Z (S57). Rated at 1900mAh (7.22Wh), it fits the internal bay of both handsets without modification. It covers the same connector pin-out and BMS handshake as the factory cell.

• Liquid Jade S56 and S57 platform compatibility: Both the Jade S and Jade Z share the same battery bay geometry, connector type, and 3.8V nominal voltage rail. A single BAT-D10 cell fits both because Acer carried the same power architecture across both handsets in this line.
• Bench tested on actual hardware: We cycled this cell through a full charge-to-cutoff sequence and monitored BMS communication with the charge IC. The protection circuit tripped correctly at the low-voltage threshold, and the cell accepted a standard CC-CV charge profile without fault flags.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one complete discharge-to-charge cycle before resuming normal use. This allows the fuel gauge IC to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.

Sudden shutdown at 20–30% on the Liquid Jade S after a cell swap

After fitting a new cell, some Liquid Jade S units shut down abruptly at 20–30% reported charge. This is a voltage cliff issue — under peak modem or display load, the new cell's voltage drops below the BMS cutoff threshold before the fuel gauge registers a low state. The fuel gauge IC is still calibrated to the old cell's discharge curve, so the percentage reading lags behind actual cell voltage. One full discharge-charge cycle with no fast charging lets the coulomb counter re-anchor to the new cell's actual capacity.

Phone shows wrong battery percentage after BAT-D10 replacement

The Liquid Jade S uses a coulomb counter in the fuel gauge IC to estimate remaining charge. When you fit a new cell, the IC still holds the learned curve from the degraded original — so it reports inaccurate percentages, often jumping or inflating remaining charge. The fix is a full recalibration cycle: charge to 100%, then discharge under normal use until the phone cuts off, then charge back to 100% uninterrupted. After that single cycle, the fuel gauge reanchors to the new cell and percentage reporting stabilises.