Toshiba Portege R150 Compatible Battery PA3349U-1BAS 10.8V

Toshiba Portege R150 Series — 10.8V Li-ion Replacement Battery (PA3349U-1BAS)

This is a 10.8V, 4400mAh (47.52Wh) Li-ion replacement battery for the Toshiba Portege R150 laptop. It fits the PP160L-00KVX, PPR16L-018DX, and PPR16L-01855 variants. OEM part numbers PA3349U-1BAS and PABAS045 both cross-reference to this cell.

• Portege R150 PP160L and PPR16L variants: All three fit models share the same connector pinout, 10.8V nominal rail, and BMS handshake protocol — one cell covers the full R150 range without modification.
• Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on the R150 platform. The BIOS recognised the cell, charge termination triggered correctly at full capacity, and protection cutoff activated at the expected low-voltage threshold.
• Post-install calibration on the R150: After fitting this cell, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on the first boot after any cell swap.

BIOS reporting battery health as poor after fitting the R150 replacement

The R150 BIOS reads health data from EEPROM registers carried over from the old cell. A fresh cell has different charge-cycle counts and capacity history stored, so the BIOS flags it as degraded on first read. This is a data mismatch, not a fault with the new battery. Running one full discharge-to-hibernate cycle followed by a complete charge allows the BIOS to rewrite its battery learn table against the new cell. After that cycle, the health indicator returns to normal.

R150 shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge is estimating state-of-charge based on the old cell's profile, so it misjudges the remaining capacity. Under full CPU and display load, the cell voltage drops faster than the uncalibrated gauge expects, triggering an emergency shutdown. Run two full discharge-to-hibernate and full recharge cycles — the fuel gauge IC recalibrates and the cutoff point stabilises above 10V under load.