Patent ID: 7828099

Claim:
An electric tractor comprising a frame having a front end and rear end, a longitudinal axis between said front and rear ends, at least one drive wheel or track for propelling said electric tractor and at least one electric motor for powering said at least one drive wheel or track, a pair of rails extending parallel to one another in a spaced apart relationship along said longitudinal axis, at least one exchangeable battery pack sized to be received in a plurality of locations along said rails, said at least one battery pack being selectively in electrical contact with said at least one electric motor once received on said rails, said at least one exchangeable battery pack being positionable and mechanically lockable by at least one first solid pin positioned through at least one first hole of a plurality of holes in said rails aligned with at least one second hole of a plurality of holes in said at least one battery pack frame in a plurality of locations from said front end to said rear end of said electric tractor along said rails such that said at least one battery pack can be positioned and locked in place in order to counter balance the weight of implements or other loads and add weight for traction on said electric tractor.