There used to be a time when you had to hook up batter cables, turn on the power and watch that the battery charger does not overcharge your battery. However with the introduction of the 12 volt battery charger back in the 50s, things have changed. Today, a lot of Marine, Military and Power Sports batteries require a 12 volt battery charger to operate. Furthermore the high efficiency to today’s lead acid battery types require that they be charged more efficiently and using certain charging techniques. The battery charger is often considered the most important factors in the life of a battery. This is because it saves the life of your battery, gets it up and running and will help cut your down time.