Sony Ericsson Xperia T3 LIS1546ERPC Replacement Battery 3.8V

Sony Ericsson Xperia T3 — 3.8V Li-Polymer Replacement Battery (LIS1546ERPC)

This is a 3.8V 2500mAh lithium-polymer replacement battery for the Sony Ericsson Xperia T3 smartphone. It fits the D5102, D5103, and D5106 variants, along with additional regional Xperia T3 models sharing the same OEM part number LIS1546ERPC. Swap it in when the original cell can no longer hold a usable charge through a normal day.

• Xperia T3 variant coverage: The D5102, D5103, and D5106 all use the same battery bay dimensions, connector pinout, and BMS handshake — one cell covers all three. No re-pinning or adapter needed.
• Bench tested on actual hardware: We ran this cell through a full charge cycle on a D5103 unit. The BMS accepted the charge without flagging an authentication error, and the charge IC stepped through trickle, CC, and CV phases cleanly.
• Fuel gauge recalibration on first use: On first install, disable fast charging and run one complete discharge down to auto-shutdown, then charge fully without interruption. This lets the fuel gauge IC map its coulomb counter to the new cell's discharge curve before any high-current cycle pushes current into an uncalibrated state.

Sudden shutdown at 20–30% on the Xperia T3 after a cell swap

This happens when the fuel gauge IC is still using the discharge curve of the old, degraded cell. The new cell has a steeper voltage drop under modem and display load than the IC expects, so it reads 25% while the actual cell voltage collapses below the shutdown threshold. The phone cuts out even though reported charge looks reasonable. One full discharge-to-shutdown cycle followed by an uninterrupted charge to 100% lets the coulomb counter re-anchor to the new cell. After that cycle, shutdowns at partial charge should stop.

Xperia T3 percentage jumping erratically after replacement

Erratic percentage readings — jumping from 60% to 40% or snapping to 100% on plug-in — mean the fuel gauge IC has not yet correlated its internal model to the new cell's chemistry. The old cell and new cell have different impedance profiles, and the IC is interpolating badly against stale calibration data. Run two full discharge-charge cycles with the screen on and mobile data active to keep the load consistent. After the second cycle, readings typically stabilise within a few percent of actual state of charge.