What will happen if the power supply of your IBM Notebook stop to work ? Scary thought. Of course, you need a spare. You can also stop lugging your AC adapter back and forth between home and office. Get a second AC adapter for your notebook and keep one in the office and one for home or travel. This AC adapter enables you to operate your notebook or charge the battery from electrical power outlets. If you are running your computer on AC power with a battery installed, this adapter charges the battery (if needed) and maintains its charge. When the system is off, the AC adapter will charge the battery and then maintain its charge.

Specifications:

Input Voltage Range: AC 100V - 240V
Output Voltage: DC 16V
Output Current: 4.5A
Note: Non-OEM product. 100% compatible with IBM power supply at fraction of the price. Even comes with 6 months warranty.

Dimensions: 5" x 2" x 1" (12.7cm x 5.1cm x 2.5cm)

Works with :  

A series, A20 series, A21 series, A22 series, A30 series, A31 series,

R series, R30, R31, R32, R40, R40e, R50,

T series, T20 series, T21, T22, T23, T30, T40, T41, T42,

X series, X20 series, X21, X22, X23, X24, X30