I know your post is an old post, but I want to say thank you, for the information that will now resolve my starting issues. Now I will purchase an identical set-up as yours and using a Hobbico base unit for holding the "Wolfpack" batteries.

After running 40 and 60 sized glow engines since the 80's, I starting having difficulties starting my OS 75AX and major complications in cranking my new Thunder Tiger 91 4 stroke for break in. The only way I could get my TT 91 cranked was using car jumper cables and my idling vehicle. Even that was tasking the alternator to the car. After several banana plug meltdowns, me going knucking futs and a half day later, the engine is broken in. The next day was going to be a maiden flight for my Corsair, but I knew that was not going to happen until I buy a new starter to replace my 19 year old heavy duty starter. So now that I have your input, I should be up and running next week with your set-up.

Mike