This is a brand new Dell 451-11258 battery for the Inspiron 13Z 1370.
This 451-11258 battery is rated 11.1 volts and 5200 mAh and will normally last several hours on a full charge. You can get longer battery life by dimming your screen and closing unused programs.
This Dell 451 11258 battery is typically superior to the original battery and is 100% compatible with your Dell Inspiron laptop computer. The battery is factory tested before shipment and backed by 30 day complete satisfaction guarantee and a 2 Year warranty.