Recombinant Gas - The RG Series are low resistance, valve regulated lead acid (VRLA) batteries.Superior starting powerReliable essential power in the event of a generator failureLow impedance designMaintenance freeConstructed with non removable vent valves - no addition of electrolyte or water requiredAerobatic: Non spillable at any altitude or attitudeFactory tested to assure airworthinessShipped fully charged and ready to installManufactured with absorbed glass mat separators (AGM)RG Series batteries ship non-HAZMAT NOTE: This aircraft battery is not designed or intended for turbine aircraft engine starting applications. Warranty coverage applies to reciprocating aircraft engine starting, and standby / essential power installations.