Battery Technology BTI Notebook For Notebook RechargeableProprietary Size, AA5200 mAh10.8 V DC1 HP-EB8440P

BTI Notebook Battery
Provides reliable power to your notebook with a capacity of 5200 mAh.
Rechargeable battery – Lasts longer on a single charge than its disposable counterparts.
10.8 V DC battery – Powers your notebook safely.
Smaller and lighter than other rechargeable batteries, proving ideal for portable devices.