About this replacement
Lenovo ThinkPad Yoga 11e 20GA000MUS — 11.25V Li-Polymer Replacement Battery (00HW042)
This 11.25V, 3650mAh (41.06Wh) lithium-polymer battery replaces the internal cell in the Lenovo ThinkPad Yoga 11e convertible notebook. It fits the 20GA000MUS, 20G8-S03400, 20GA0012, 20GA000QUS, and over 18 additional Yoga 11e configurations. OEM part numbers 00HW042, 00HW043, 00HW044, SB10J78990, SB10J78991, and SB10J78992 all cross to this cell.
- Yoga 11e convertible compatibility: The full Yoga 11e line shares the same 11.25V three-cell architecture, connector pinout, and BMS handshake regardless of touch or non-touch configuration — that's why one cell covers all 20GA and 20G8 variants on this list.
- Bench tested on actual hardware: We ran this cell on a Yoga 11e 20GA unit. The BMS completed handshake within one charge cycle, the BIOS recognised rated capacity, and charge current stepped down correctly at the 80% and 100% thresholds.
- Post-install calibration on the Yoga 11e: After fitting, let the laptop discharge fully until it hibernates on its own, then charge uninterrupted to 100% without using the machine. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.
Why the Yoga 11e shuts down at 20–30% after a battery swap
The Yoga 11e's fuel gauge IC builds a discharge curve against the original cell over hundreds of cycles. When a new cell goes in, that curve no longer maps to the fresh chemistry, so the IC calls empty well before the cell actually is. Under full CPU and display load, the platform then hits a voltage floor it was not expecting and cuts power. Running two to three full discharge-to-hibernate cycles recalibrates the IC against the new cell. After calibration, the shutdown-at-percentage behaviour stops.
BIOS reporting battery health as poor or capacity as wrong after replacement
The ThinkPad BIOS reads health data from EEPROM registers written by the original factory cell — the new cell's EEPROM carries its own rated values, which can differ from what the BIOS previously logged. This produces a "poor health" flag or an incorrect Wh figure in Lenovo Vantage immediately after install. It is not a fault with the replacement cell. Run the battery learn cycle — full discharge to hibernate, then uninterrupted charge to 100% — and the BIOS will rewrite its health baseline to match the new cell's actual 41.06Wh rating.