I have a Huskee log splitter with a 12.5 Briggs and Stratton engine that kicks back so violently that it broke my hand. I took it to two B and S dealers and they could not find anything wrong with it, but it still kicks back. I decided to change from a pull start to an electric start. I replaced the fly wheel with an older fly wheel that had a ring gear and put an electric starter on. My question is what size battery do I need and do I need to put a solenoid starter or can I just use a heavy duty switch to run the starter.