Deep Cycle Marine/RV Battery in a group 31 sizing. This battery will replace any type or group 31battery with an identically sized battery. Comparable flooded size 31 deep cycle batteries have 1/2 the capacity, or weigh far more.
A: Hi Vicky, I'm glad to assist you. This CARQUEST HD Battery Farm and Truck Battery, Group Size 31, 950 CCA (Part No. 31S30) comes with 195 minutes reserve capacity and 81 amp hours. The part number of this item does not denote anything.