I had a Sphere TC and two cell batteries. My brushless motor didn't have adjustable timing and I didn't even have a charger that would do one-cell. So with no boost and no adjustable timing and only two cell batteries and charger, I had to start over. I guess if you are at it year round you can slowly add what you need as you go along. I have had this same thing happen a couple of times when getting back into electric, and its annoying when I only need to pick up an occasional new engine for nitro every few years.