About this replacement
Lenovo IdeaPad 330-15ICH / 330-17ICH — 11.34V Li-Polymer Replacement Battery (L17M3PB1 / 5B10Q71251)
This is an 11.34V 3900mAh (44.23Wh) Li-Polymer battery for the Lenovo IdeaPad 330-15ICH and 330-17ICH series laptops. It replaces a degraded or failed original cell and restores full portable operation. It cross-references multiple OEM part numbers including L17M3PB1, L17C3PB0, L17D3PB0, and 5B10Q71251.
- IdeaPad 330-15ICH and 330-17ICH fitment: Both the 15-inch and 17-inch 330 ICH variants share the same 11.34V three-cell Li-Polymer architecture, connector pinout, and BMS handshake protocol. One battery covers the full ICH sub-family without any modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on IdeaPad 330-series hardware. The BMS authenticated correctly, the fuel gauge IC initialised without error flags, and the BIOS accepted the cell without throwing an unknown battery warning on first boot.
- Post-install calibration cycle: After fitting this battery, 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 appears in Lenovo Vantage after every cell swap.
Laptop shuts down at 20–30% remaining after battery swap
The IdeaPad 330 BIOS maps its shutdown threshold against the old cell's discharge curve stored in EEPROM. A new cell with a different internal resistance profile hits a voltage cliff under combined CPU and display load before the fuel gauge IC registers zero. The system reads a valid percentage but the cell voltage drops below the BMS protection floor under load, triggering an abrupt cutoff. Run two full calibration cycles — full discharge to hibernate, full uninterrupted charge to 100% — and the fuel gauge IC will remap its curve against the new cell, resolving the premature shutdowns.
BIOS reports battery health as "Poor" or "Replace Now" on first boot
This flag is triggered by the BIOS comparing the new cell's EEPROM data against the health history logged from the old battery. It is not a defect in the replacement cell. The Lenovo EC (embedded controller) needs at least one complete learn cycle to overwrite the cached health data. Charge to 100%, discharge fully to hibernate cutoff, then charge back to 100% without interruption — after that cycle the health status in Lenovo Vantage will update to reflect the actual condition of the new cell.