Note: Not FAA Approved. Intended for use in EXPERIMENTAL AIRCRAFT ONLY.Designed for piston engines up to 550ci . Max alternator output is 80 amps at 28.8V or 150 amps at 28V. If used for turbine engine, you must have 2 batteries connected in parallel or use the ETX1200-24-VNT model. Contact us prior to buying to verify the proper batteries needed for your TURBINE application, call 970.674.8884 option 1, or techsupport@earthxbatteries.com.Please Note: Due to shipping regulations, this battery does ship as dangerous goods outside of the 48 continental USA states.