dan, check the capacity plate to verify that no min/max battery weight is listed. If the truck lifts its load within its own footprint, i.e. the load wheels are at or near the tip of the forks and the center of gravity of the load remains within the wheelbase at all times, the truck will not require counterballasting and car type batteries will be "fine" (deep cycle batteries would be preferred) of course, with a high lift you do want the truck to be heavier than the load it's lifting by a significant amount to keep the combined center of gravity as close to the ground as possible (how high does it lift?)