The Power-Sonic PS-121000 is a standard group size 27 AGM sealed lead acid battery. It can be used an many applications where a sealed deep cycle reserve power solution is needed. This is a dry cell battery and can be mounted on its side. The PS-121000 can be used as a marine battery and with its universal terminal (i.e. both nut/bolt and SAE automotive style "round" terminal); installation should not require the changing of cable ends.