Macfox M20x B-attery 4 Pin Version 48v 10.4ah 500 Miles Used 2a Charging Include
The battery is functioning and ready to be used but the base is not meant for the dual battery mount this one has the controller so if you do want for dual battery the mount will have to be bought but if you want a new controller this one is good it was replaced under warranty but by then I had someone fix for me so these are basically new