Thanks for the response and suggestions.
I was thinking the total would be 350 but it seems that might not be enough. Also I think you are right the batteries are different at least based on the look of it.
I havent heard of this car but then again I am not very well versed. The one frustrating thing he didn't like about his old car was the radio we have was sporadic in how it worked for some reason. We didn't have luck figuring out why and lived with it but it made for less enjoyment. When we got it too it felt like the build was not done well. Is the radio you mention one that works well or should I consider an upgrade? Also, if he wanted could he use this car and compete to some level on a short indoor track? Last, could he also use the parts in a different car if he chooses?