Acer TravelMate 3030 Replacement Battery CGR-B/350CW 11.1V

Acer TravelMate 3030 / Ferrari 1000 Series — 11.1V Li-ion Replacement Battery (CGR-B/350CW)

This is an 11.1V, 2200mAh Li-ion replacement battery for the Acer TravelMate 3030 and Ferrari 1000 series notebooks. It replaces OEM part numbers CGR-B/350CW, 3UR18650H-QC174, and BT.00603.018. Capacity is 2200mAh (24.42Wh) — use this figure, not inflated third-party specs circulating online.

• TravelMate 3030 and Ferrari 1000 platform fit: These models share a common 11.1V three-cell battery rail, the same physical connector, and compatible BMS handshake logic — which is why one cell covers variants including the Ferrari 1005WLMi, 1003WTMi, and 1000-5612.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a TravelMate 3030 chassis. The BMS accepted the charge handshake on first connection, hit charge cutoff at 12.6V, and the BIOS registered the cell without error codes after a full calibration cycle.
• Post-install calibration on the TravelMate 3030: After fitting, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that typically appears after a cell swap on this platform.

BIOS reporting battery health as poor immediately after replacement

The TravelMate 3030 BIOS reads health data stored in the old cell's EEPROM. When a new cell goes in, that EEPROM data no longer matches the actual cell state, so the BIOS flags it as degraded or unknown — even though the cell is new. This is not a fault with the replacement battery. Run the full discharge-to-hibernate then uninterrupted charge cycle described above. After two to three full cycles, the fuel gauge IC recalibrates against the new cell and the health warning clears.

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

This happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load — even though the OS gauge still reads 20–30%. It is a fuel gauge calibration problem, not a defective cell. The gauge IC is still mapping charge levels against the old cell's discharge curve. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%. After calibration, the OS gauge and actual cutoff voltage should align — confirm by checking that shutdown no longer occurs above 10% shown.