10 Lithium Batteries! My brother, a Senior Engineer at Raytheon, built this RV. I will be in Treasure Island April 22-28 to get this Van SOLD! Interior photos are messy, and the interior will be cleaned up on April 22, and ready to sell. Don't delay as this will be sold next week! I'll update cleaned photos and the mileage on April 22. My brother took this van on two fabulous trips to the West Coast. Unfortunately, he isn't here any longer to show you all the details how to operate the RV features. I do know it has extra insulation and 10 Lithium Batteries!! TEXT me for an appointment to view/buy this RV in Treasure Island April 22-28! Anna 480-510-5182