Sony BPS13 Battery (VGP-BPS13 , VGP-BPS13A/B, VGP-BPS13B/B, VGP-BSP13/S)
10.8/11.1V 4400mAh Li-ion Laptop Battery

Designed exclusively for use with VAIO® Series notebooks, the BPS13A/B standard capacity battery is perfect for extended computer usage around your home, office or while on the road. A spare battery also lets you use your notebook longer when you aren't close to a power source.

Compatibility
AW Series
BZ Series
NS Series
SR Series

Replacement Laptop Battery for Sony Vaio VGN-AW, VGN-BZ, VGN-CS, VGN-FW, VGN-NS, VGN-SR Series. Compatible Battery Part Numbers: VGP-BPS13, VGP-BPS13/B, VGP-BSP13/S, VGP-BPS13A/B, VGP-BPS13B/B, VGP-BPS13A/S.