CAREFUL!!!! I read in the 360Challenge manual not to charge the battery or jump it with the main power switch (red cut off) in the OFF position!!! it can damage the entire electric system! Find out if that is true for the 355CH as well! I am almost sure! As for the batterie: I had my 355CH batterie replaced a month ago when it did the same thing. It was probably the battery itself. Not a gel but a Interstate. The problem I had was that the vibration of the car rattled the batterie so hard that the various metal plates in the batterie came lose and shortened it out! Yep, Challenge cars are a lot of fun
Yes. Although mine at my trailer is on the roof, it's also under a huge Oak tree, so it never really sees the sun directly. All you need is an occasional light source, weather natural or artificial. Obviously the brighter the better, but not crucial. Put it close to a window and you'll be fine.