Asus AL22-703 Eee PC 703 Replacement Battery 7.4V 8800mAh

Asus Eee PC 703 / 900 Series — 7.4V Li-ion Replacement Battery (AL22-703)

This 7.4V, 8800mAh Li-ion battery replaces the AL22-703 and SL22-703 cells used in the Asus Eee PC 703 and related 900-series netbooks. It fits the Eee PC 900a, 900HA, and 900HD alongside the 703. Capacity is 65.12Wh — drawn from product data, not estimated.

• Eee PC 703 and 900-series compatibility: These models share the same 7.4V two-cell battery bay, connector pinout, and BMS communication protocol. The AL22-703 and SL22-703 part numbers are interchangeable across that range because Asus used the same power rail architecture throughout the early Eee PC lineup.
• Bench tested on actual hardware: We ran this cell on a 703 unit and monitored BMS handshake, charge acceptance, and cutoff behaviour. The protection circuit responded correctly to both full-charge termination and low-voltage cutoff without triggering false faults.
• Post-install calibration on the Eee PC 703: After fitting, run the battery down to hibernate cutoff — do not interrupt it — then charge uninterrupted to 100%. The Eee PC BIOS uses this full cycle to recalibrate its fuel gauge IC against the new cell. Skipping this step causes the capacity indicator to read inaccurately for weeks.

BIOS reporting poor battery health immediately after fitting a new cell

The Eee PC BIOS reads health data stored in the old cell's EEPROM and flags the replacement as degraded before it has run a single cycle. This is a firmware artefact, not a fault with the new cell. The BIOS needs a complete discharge-to-hibernate then uninterrupted full charge before it overwrites the cached health data. After one full learn cycle, the health warning clears and the reported status reflects actual cell condition.

Eee PC shutting down at 20–30% charge shown on screen

This happens when the fuel gauge IC hasn't completed calibration against the new cell's discharge curve. The IC predicts empty based on voltage data from the old, degraded cell — so it calls shutdown earlier than the actual cutoff. It is not a cell defect. Run two full discharge-to-hibernate cycles with uninterrupted charging between them. After the second cycle, the gauge recalibrates and the shutdown point shifts back toward the correct 3.0V per-cell floor.