Stay on the go with this EverStart Lead Acid Marine/RV Deep Cycle Battery . Group Size 24DC. It’s designed for use with a boat or an RV and is rated at 690 MCA and 101 amp hour. This EverStart battery features improved cycling capacity extending the amount of time it will last. This means it will allow a boat to stay out on the water for a longer time. Price shown does not include the Core Battery charge (varies by state). To avoid this core charge . bring your old battery in exchange at time of purchase. If you do not have your old battery at time of purchase . simply bring it later along with your receipt and your core refund will be issued.