Lifeline Lithium Iron Phosphate (LiFePO4) batteries have been designed to withstand heavy loads of deep cycle activity. With the fact that they last up to 10x's longer and have 2x's the capacity as a comparable lead acid battery, they are a fantastic upgrade option for RVs, boats and solar applications.
Lifeline Lithium Batteries
Lifeline LL-12V100-24 Lithium Battery
12v - 100AH Lithium Deep Cycle Battery