The travel trailer comes with the FLX package, which consists of a lithium battery from Lithionics, and utilize an inverter and a solar panel system to charge this battery. On April 27th, the trailer was removed from indoor storage, during storage the trailer was stored per Winnebago's instruction, when the trailer is turned on as per instruction, the inverter caught on fire while I was inside. After repair that I had shelled out as Winnebago did not reimburse or respond to the problem, the trailer battery again failed on May 27th. August 7th, the trailer had been at repair facility for almost 3 months, and with new battery and inverter and various components, the inverter system caught on fire AGAIN when the power system was turned on. The repair facility had reported that the system is not adequately designed, as there's no breaker between the battery and the inverter, and there's also lack of breaker between the solar panel system and the batter and inverter, so any faulty components would cause the system catch on fire. To this date, Winnebago has yet to respond to any of the complaint, this system poses a serious fire risk.