The Fullriver FRDC250-6 (DC250-6) is a high performance AGM deep cycle battery. Due to the Fullriver™s unique construction, it guarantees leak proof operation in any position. The AGM technology allows for a completely sealed maintenance-free battery with no need to add water. Fullriver batteries incorporate a built-in design that recombines over 99% of gases. The FRDC250-6 (DC250-6) has over 1000 discharge/recharge cycles giving them an expected life span of 5 to 7 years.