The latest and greatest is now out! This is the "upgrade" to the P4500i (gasoline inverter generator). It is IDEAL for Utah camping at high elevation with ranges up to 13,000 feet! More power than the P4500. More quiet than the P4500! More money, too. But, hey, this is a great great upgrade! This unit also has the Cummins/Onan incredible THREE year warranty! In stock, in Springville. Please text me to check it out. Videos to come! Thanks for looking. JOSH @ Birdies Power Equipment