Trojan Battery’s deep-cycle absorbent glass mat batteries are designed for solar and other renewable energy applications. Its nonspillable design enables customization of use and position, and the batteries are certified for nonhazardous shipping per U.S. DOT/IATA regulations. They come with a rugged polypropylene case, reinforced cell compression, flame arrestors and are abuse tolerant. 800/423-6569; www.trojanbattery.com.