The Bull-Pak is SAFE because you do not need to unplug the battery from the truck, and connect it to the charger. This battery has two sets of leads provided. One set is connect to the truck and the other is connect to the charger. The operator one has to plug the AC cord into a 120 volt AC outlet.
The Bull-Pak is EASY because the operator only needs to find a 120 volt AC outlet and plug in the charger to recharge the battery. The charger is an automatic start/stop, with a DVDT allowing for near perfect recharge, which will help eliminate over-charging.
The Bull-Pak is CONVENIENT because the charger is always with your equipment, wherever it is needed.