About this replacement
Toshiba Thrive AT105 / Folio 100 — 10.8V Li-Polymer Replacement Battery (PABAS243)
This 10.8V, 2200mAh Li-Polymer battery replaces the original PABAS243 / PA3884U-1BRS cell in the Toshiba Thrive 10-inch Android tablet and the Folio 100. It fits the AT105-T016 and AT100 series. Voltage and capacity match the factory spec exactly.
- Thrive AT105 and Folio 100 compatibility: Both platforms share the same 10.8V three-cell Li-Polymer stack, the same flat-pack connector pinout, and the same BMS handshake protocol. A single part number covers both lines.
- Bench tested on actual hardware: We ran this cell in an AT105-T016 chassis. The BMS initialised on first boot, reported voltage correctly, and the charge IC accepted a full cycle without flagging a fault condition.
- Fuel gauge recalibration after install: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100% before use. The Thrive's fuel gauge IC calibrates against cell history — skipping this step causes the percentage display to read inaccurately from day one.
Toshiba Thrive shutting down at 15–25% battery remaining
The Thrive's SoC pulls harder when the display brightness is high and Wi-Fi is active simultaneously. At around 3.4–3.5V per cell, the combined load drags voltage below the BMS cutoff threshold before the fuel gauge reads zero. The tablet shuts off abruptly even though Android still shows charge remaining. Running the full recalibration cycle described above teaches the fuel gauge IC where the real voltage cliff sits on this cell.
Tablet reporting 1% or jumping erratically after battery swap
The Thrive's fuel gauge IC stores a learned discharge curve tied to the original cell's internal resistance profile. A new cell has a different curve, so the old calibration data produces wildly inaccurate readings immediately after a swap. This is not a fault with the replacement cell. Discharge completely to auto-shutoff, then charge uninterrupted to 100% — one full cycle resets the learned curve to the new cell and stabilises the percentage readout.