About this replacement
Samsung Galaxy Book Go — 7.72V Li-Polymer Replacement Battery (AA-PBAN2HE)
This is a 7.72V, 5250mAh Li-Polymer replacement battery for the Samsung Galaxy Book Go ultraportable notebook. It fits models including XE340XDA-KA1US, XE340XDA-KA3US-RB, and XE340XDA-KA1IT. Swap this in when the original cell no longer sustains charge through a standard workday.
- Galaxy Book Go platform fit: All XE340XDA variants share the same 7.72V single-cell Li-Polymer architecture, connector pinout, and BMS handshake protocol — which is why one part number covers the full model range without modification.
- Bench tested on actual hardware: We ran this cell through charge, discharge, and BMS communication checks on a Galaxy Book Go unit. The BMS accepted the cell without authentication errors and charge current stepped correctly across all stages.
- First-cycle calibration after install: After fitting this battery, run the laptop down until it hibernates on low battery, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
Why the Galaxy Book Go shuts down at 20–30% after a battery swap
The fuel gauge IC in the Galaxy Book Go calculates remaining capacity against a stored profile from the old cell. When a new cell goes in, that profile is stale and the IC underestimates usable capacity. Under combined CPU and display load, the reported percentage drops faster than real voltage — and the system trips a shutdown before the cell is actually depleted. Running two full discharge-to-hibernate and full-recharge cycles forces the IC to rebuild its profile against the new cell's actual voltage curve.
BIOS reporting battery health as poor immediately after replacement
The Samsung BIOS reads health data from EEPROM written by the original cell during its service life. A new cell arrives with a clean EEPROM, which the BIOS interprets as missing or degraded data and flags as poor health. This is a firmware read issue, not a fault with the replacement cell. Complete one full discharge-to-hibernate cycle followed by a full uninterrupted charge to 100% — the BIOS learn cycle will rewrite the health register and clear the warning.