Concorde Battery Corporation's RG-380E/40 Series are 38 AH valve regulated sealed lead acid aircraft batteries. The battery series offers lead acid and lithium ion aircraft batteries with superior starting for turbine and reciprocating engines. These TSO-C173 authorized aircraft batteries are maintenance free, outperform Ni Cd batteries at low temperatures, and are safe and reliable operation at high temperatures. They ship HAZMAT-exempt. For more information visit www.concordebattery.com or call (626) 813-1234.