2V 22Ah Deep Cycle Sealed Lead Acid (SLA) Battery for X2, X2 Pro and X4 Classic models. Will also work with other 12V caddy brands. Does not include battery leads or carry bag.
Dimensions: 7.5" X 7" X 3"
Weight :16 pounds
Warranty: One year
THIS HAS BEEN DISCONTINUED.
The New Replacement is 12V 36Ah.
The new battery is black, instead of green.
Here is the direct link to that page: