About this replacement
Lenovo YOGA 910-13IKB — 7.68V Li-Polymer Replacement Battery (L15M4P23)
This is a 7.68V, 8100mAh (62.21Wh) Li-Polymer battery for the Lenovo YOGA 910 and YOGA 910-13IKB convertible laptop series. It replaces OEM part numbers L15M4P23, L15C4P21, L15C4P22, 5B10L22508, and L15M4P21. The slim 4.00mm profile fits the YOGA 910's chassis without modification.
- YOGA 910-13IKB series compatibility: The 910-13IKB variants — including 80VF models — share the same voltage rail, connector pinout, and BMS handshake protocol. One cell covers all configurations listed across this generation.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a YOGA 910-13IKB unit. The BMS negotiated correctly, protection circuits tripped at the expected cutoff thresholds, and the fuel gauge IC accepted the new cell without error flags after calibration.
- First-cycle recalibration on YOGA 910: After installing, discharge the laptop normally until it hibernates at its low-battery cutoff. Then charge uninterrupted to 100% without waking the system. 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.
YOGA 910 shutting down at 20–30% shown after battery swap
This happens because the fuel gauge IC is still running calibration data from the old, degraded cell. Under combined CPU and display load, the new cell's actual voltage curve doesn't match what the BIOS expects, so the system reads a false low and cuts power. It is not a fault with the replacement cell. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100% — after that, the gauge IC recalibrates to the new cell's voltage curve and the early shutdowns stop.
BIOS reporting wrong Wh rating after installing this cell
The Wh figure shown in Lenovo Vantage or the BIOS battery screen reads from EEPROM data written at the factory, not from a live measurement of the installed cell. A new cell's EEPROM may report a slightly different Wh value than what the original showed, and this is normal. The cell in this listing is rated at 62.21Wh — if your BIOS shows a different number, cross-check against the physical label on the battery, not the software readout. No firmware update or recalibration changes what EEPROM reports.