The Think Pad Advanced Ultrabay Battery III is a rechargeable battery that fits in the Think Pad Ultrabay device bay. Together with the system battery, it can extend user mobility & unplugged computing time. Features Technology: 3-cell lithium polymer Voltage Provided: 10.8 V Capacity 2900 m Ah
Dimensions Width 12.8 cm Depth 13.9 cm Height 1.1 cm Weight 235kg