Toshiba Click 2 Pro Replacement Battery 11.1V 3500mAh PA5190U-1BRS

Toshiba Click 2 Pro / Satellite P35W Series — 11.1V Li-Polymer Replacement Battery (PA5190U-1BRS)

This is an 11.1V, 3500mAh (38.85Wh) lithium-polymer replacement battery for the Toshiba Click 2 Pro convertible and the Satellite P35W and P35W-B3226 notebooks. It uses OEM part number PA5190U-1BRS and slots into the same bay as the original cell. Voltage and connector match the factory specification exactly.

• Click 2 Pro and P35W platform fit: These three models share the same battery bay dimensions, 11.1V power rail, and BMS handshake protocol. The PA5190U-1BRS connector and cell configuration are identical across the Click 2 Pro, P35W, and P35W-B3226 — no adapter or modification needed.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the P35W platform. The BMS accepted the cell without fault codes, charge current ramped normally through CC/CV phases, and the protection circuit triggered cleanly at low-voltage cutoff.
• Post-install recalibration on the Click 2 Pro: After fitting this battery, run the laptop down to hibernate cutoff under normal load, then charge uninterrupted to 100%. This forces the BIOS through one full learn cycle and clears the inaccurate health warning that appears after any cell swap on this platform.

BIOS reporting poor battery health immediately after fitting the PA5190U-1BRS

When you swap the cell, the BIOS still holds EEPROM data from the old battery — cycle count, wear level, and capacity estimates all carried over from the dead pack. The new cell hasn't yet fed the fuel gauge IC enough charge and discharge data to overwrite those values. This is not a fault with the replacement cell. Run one complete discharge to hibernate cutoff followed by a full uninterrupted charge to 100%, and the BIOS learn cycle will update its health reading against the actual new cell.

Click 2 Pro shutting down abruptly at 20–30% charge shown on screen

The on-screen percentage comes from the fuel gauge IC, which calibrates over several cycles after a cell swap. If the IC still maps old capacity curves to the new cell, it will report 20–30% while the actual cell voltage has already dropped to the BMS cutoff threshold. Under combined CPU and display load on the P35W chassis, the voltage drop is steeper and faster — the BMS trips before the gauge catches up. After two to three full discharge-and-charge cycles, the fuel gauge IC recalibrates against the new cell and the premature shutdown stops. Check battery voltage in HWiNFO64 — it should read above 10.8V at the 20% mark once calibration is complete.