The ASUS Notebook 6 Cell Battery Compatible with U20/U50/U80 is a spare / replacement laptop battery. It can extend your laptop's life between charges and it works great as an additional battery when you're on the road. Each battery is 100% quality-tested and fully compatible with ASUS laptops.
Compatibility
U20 Series: U20A U50 Series: U50Vg / U50G U80 Series: U80V