This is a brand new Gateway NV58 battery.

This NV58 battery is rated at 5200 mAh or 58 Whr. There are no compatibility issues if your existing battery is rated at 4400 or 4800 mAh or a lower Whr.

All our products carry a full 2 Year warranty and every battery is charged and tested before it ships. We provide a 30 day money back guarantee if you are not completely satisfied. We are so confident in the quality of our batteries, we will pay for any and all shipping expenses if our product fails to perform in the first 30 days you have our battery.

You can expect about 2 hours to 2-1/2 hours of run time with this Gateway NV58 battery when new, depending on your energy use. The higher capacity battery cells inside this cartridge have an energy capacity of 5200 mAh. This battery will be compatible with batteries rated at 4400 & 4800 mAh capacities while providing up to 20% more run time