Battery Technology BTI For Notebook RechargeableProprietary Size5200 mAh10.8 V DC E7U21AA-BTI

BTI Battery
Helps you keep your notebook ready to use anytime.
Save your precious time by recharging the battery instead of running to the store each time you run out of batteries.
10.8 V DC battery – Powers your notebook safely.
Smaller and lighter than other rechargeable batteries, proving ideal for portable devices.