ALWAYS remove the main power supply when working on an electrical device (both battery and mains).

Battery part number is [337607-001]

14.8 volts.

4.4 Amps per hour (4400 mAh).

8-cell.

The battery was advertised to last for 5 hours unplugged when it was new back in 2004.

After 9 years of cell deterioration, battery life is no more than 10 minutes.