Fullriver Battery DC224-6 is a 6 volt 224Ah VRLA AGM battery designed for deep discharge applications which can be recharged hundreds of times. Sealed and maintenance-free. Made of Absorbed Glass Matt Technology(AGM), electrolytes absorbed into a fiberglass separator and not in liquid form requiring zero maintenance during its lifetime. If Fullriver batteries are properly taken care of, average lifetime can be from 5-7 years.