About this replacement
Lenovo IdeaPad U470 — 11.1V Li-Polymer Replacement Battery (L10C4P11)
This 11.1V, 4900mAh Li-Polymer battery replaces the original cell in the Lenovo IdeaPad U470 ultrabook. It matches the OEM part numbers L10C4P11 and L10N6P11. Total rated capacity is 54.39Wh.
- IdeaPad U470 fitment: The U470 uses a slim Li-Polymer pack with a specific connector pinout and BMS communication line. This cell matches that connector and carries the correct EEPROM data so the BIOS recognises it without throwing an unknown-device flag on first boot.
- Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on the U470 platform. The BMS communicated correctly with the system board, charge current ramped as expected, and the protection circuit tripped cleanly at the low-voltage cutoff threshold.
- First-cycle calibration on the U470: After installation, run the laptop down until it hibernates on its own, then charge uninterrupted to 100% without interruption. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears after every cell swap on this platform.
Why the U470 BIOS reports poor battery health after a cell swap
The IdeaPad U470 stores battery health data in EEPROM on the battery's BMS board. When a new cell is installed, the BIOS reads residual cycle count and health flags from the old EEPROM profile and flags it as degraded. This is not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and brings the reported health figure into line with actual cell condition.
U470 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 voltage curve. The gauge predicts shutdown based on the old cell's profile, so it calls low-voltage cutoff earlier than the actual state of charge. The fix is two to three full discharge and charge cycles — each time letting the laptop run down to hibernate naturally. After the third cycle, the fuel gauge recalibrates and the cutoff point aligns with the actual remaining charge at roughly 10.5V under load.