It is 36V 13ah lithium battery. This battery is also fit for 26inch fat tire beach snow and Vortex with newest battery. If you have a 26inch fat tire beach snow ebike and Vortex, you should check your battery carefully, if it is our new model. If you can't decide, please send the photos of your old battery to our email: service@ecotric.com, we will give you right link.
