Is a nikon d3100 battery compatible with the nikon d3200?

Originally I was looking for a battery grip, and I can't find one. The battery grip for the d3100 is not compatible with the d3200. Does anyone know if they carry the same battery?

In the link below is a side by side comparison of the 2 cameras.
Scroll down to see they use the same battery.
http://www.dpreview.com/...ikon_d3200

This information could also be found on the Nikon website.

Did you look there first?

Yes, they both take the EN-EL14 batteries.