This is a brand new Asus ZX50J battery. This Asus ZX50J battery is rated 14.4 volts and 2600 mAh and will normally last 4 hours on a full charge.

Inside the Asus ZX50J battery are South Korea's best Lithium-ion rechargeable battery cells. The superior battery cells will provide longer run times between charges as well as a longer service life than cheaper batteries.

This Asus ZX50J battery is typically superior to the original battery and is 100% compatible with your Asus notebook computer. The battery is individually tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.