The S-1380 by Rolls is one of the highest capacity batteries to use for deep cycle backup. Offering 1050AH at the 20hr rate the S-1380 offers high capacity at a good price. We recommend the S-1380 for use in Solar backup systems, off grid configurations, and any other application that requires large capacity deep cycle storage. Rolls Batteries are made in North America and are made to the highest standards in the industry.As most Rolls Surrette batteries are built to order, there can be a delay of 2-4 weeks. Because of this, each order is quoted individually at the time of the request.