What is a deep cycle battery

Deep cycle batteries are not often used in vehicles, like cars and trucks. On the contrary, they work to provide a steady supply of a lower amount of power, making them ideal for recreational vehicles, boats, golf carts, and electric vehicles, such as medical carts or electric bikes. The 48V deep cycle battery version will be for golf carts, e-tuktuks, renewable energy storage, telecom, data center backup, micro-grid.

But the deep cycle battery can not used as a starting battery, marine Dual-Purpose Batteries combine the performance of starting and marine deep  cycle batteries and are a good choice on smaller when there's no room for two batteries.