It adds approximately 5* hours of battery life to your computer. 
If you are on the road or in meetings frequently and require non-interrupted computing time, keep one extra battery pack 
handy and enjoy the true portability of your PC.

Specifications:

Capacity: 10.8V x 37Wh
Number of battery cells: 6
Dimensions: 6.2" x 0.8" x 1.8"
Weight: 0.52 lb
Battery life (Normal Mode): Up to 5 Hours*
Battery recharge time (Off/On): 3 hours/3 ~ 8 hours or longer (depending on system condition)
Compatible with Toshiba libretto U100 and U105 portable computers
One year limited warranty

*Measured by MobileMark

Battery life may vary depending on applications, power management settings and features utilized. Recharge time varies 
depending on usage. Battery may not charge while computer is consuming full power. After a period of time, the battery will 
lose its ability to perform at maximum capacity and will need to be replaced. This is normal for all batteries.