Sony Xperia Tablet Z2 Replacement Battery LIS2206ERPC 3.8V

Sony Xperia Tablet Z2 — 3.8V Li-Polymer Replacement Battery (LIS2206ERPC)

This is a 3.8V, 6000mAh (22.8Wh) lithium-polymer replacement battery for the Sony Xperia Tablet Z2, Xperia Tablet Z2 TD-LTE, SOT21, and Castor variants. It replaces OEM part LIS2206ERPC when the original cell has degraded and no longer holds a usable charge. The slim 2.20mm cell profile matches the original pack dimensions at 237.70 x 103.60mm.

• Xperia Tablet Z2 platform compatibility: The Z2 tablet line — including TD-LTE and SOT21 variants — shares the same connector pinout, BMS communication protocol, and 3.8V nominal voltage rail. One battery fits all variants in this cluster without adapter or modification.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Z2 unit and confirmed the BMS handshake accepted the new pack without fault codes. The protection circuit triggered correctly at both high-voltage cutoff and low-voltage floor.
• Fuel gauge reset after installation: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The Z2's fuel gauge IC calibrates against the old cell's wear profile — skipping this step causes the percentage readout to drift immediately after swap.

Xperia Tablet Z2 shutting down at 15–25% remaining

The Z2 shuts down early when the combined load of the display, WiFi radio, and background processes pulls voltage below the BMS cutoff threshold faster than the fuel gauge expects. An aged or freshly installed cell with an uncalibrated gauge makes this worse — the tablet thinks it has 20% left, but voltage has already dropped past safe operating floor. After fitting a replacement, the gauge is still mapped to the old cell's discharge curve. Run one complete discharge cycle to automatic shutoff, then a full uninterrupted charge to 100% to remap the curve. After calibration, the shutoff should track closer to 3–5% remaining rather than 20%.

Fast charging not working after battery swap on the Xperia Tablet Z2

The Z2's charge IC negotiates charge rate during the first accepted charge cycle on a new cell. If fast charging is absent immediately after installation, the IC is defaulting to trickle or standard rate until it completes that negotiation. Use the original Sony charger and cable — third-party chargers that don't present the correct voltage handshake will lock the IC into standard charging permanently for that session. Disconnect, reconnect with the correct charger, and allow one full charge cycle to complete before concluding fast charge is unavailable.