Does Your Small Boat Need A Dual Battery System?

Boat batteries typically come in two ways: cranking batteries and house batteries. These types don't describe specific battery types but rather their usage on your boat. A cranking (or starter) battery works like your car's battery to get your boat's gasoline engine running. On the other hand, your house batteries (typically deep cycle batteries) power your boat's constant electrical load. This multi-battery configuration makes sense for larger craft, but what about small fishing boats or bass boats?