LG E500 Notebook Replacement Battery 11.1V 4400mAh

LG E500 / F1 Series — 11.1V Li-ion Replacement Battery

This is an 11.1V 4400mAh (48.84Wh) Li-ion battery for LG notebook computers including the E500, F1, F1-2224A, and F1-2225A9 series. It fits the original battery slot and connects to the same three-pin power rail used across this LG notebook range. Use the Fit Model list to confirm your exact model before ordering.

• E500 and F1 series compatibility: These models share a common 11.1V three-cell architecture and identical battery connector pinout. The BMS handshake protocol is consistent across the range, so one cell pack covers the full model group without modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on an LG F1 unit. The BMS accepted the pack without error codes, balancing kicked in across all three cell groups, and the protection circuit responded correctly to cutoff at low voltage threshold.
• Post-install discharge cycle — LG notebooks specifically: After fitting this battery, run the laptop on battery until it hibernates on its own, then charge uninterrupted to 100%. LG's BIOS battery learn routine triggers on this sequence and clears the "poor health" or "unknown battery" flag that appears after every cell swap.

BIOS reporting poor battery health immediately after fitting a new cell

The LG E500 BIOS reads health data stored in the battery's EEPROM, not from live cell measurements alone. A new cell ships with EEPROM values that don't match the laptop's charge history log, so the BIOS flags a mismatch as degraded health. This is a data conflict, not a fault with the replacement cell. One full discharge-to-hibernate followed by a complete uninterrupted charge resets the learn cycle and brings the health indicator back to normal.

Laptop shuts down abruptly while the gauge still shows 20–25% remaining

This happens when the fuel gauge IC hasn't calibrated against the new cell's actual discharge curve. The old calibration data tells the OS there's charge remaining, but the cell voltage drops below the BMS cutoff threshold under CPU and display load before the counter reaches zero. It's not a faulty cell — the gauge needs re-learning. Run two full discharge-to-hibernate and full-charge cycles back to back, and the OS fuel gauge will track the real voltage curve accurately from the third cycle onward.