Ideal for heavy-duty starting and moderate deep cycle service. Ideally, you would have one battery for starting and an auxiliary deep cycle battery for the trolling motor and/or other accessories. However, when you can only have one battery on board, it should be a dual purpose battery. The deka marine master dual purpose cycling/starting series was designed especially for the user that requires reliable starting and moderate deep cycle service. This series has all of the quality you”ve come to expect from DEKA… and fits perfectly between the starting and heavy-duty, deep cycling batteries shown on previous pages. Use it for your larger, harder-starting engines and/or moderate-duty trolling or accessory loads. The DEKA DUAL PURPOSE is an ideal compromise between the unique demands of starting service and deep cycling, low amp draw service.