RE: Which lipo for driving a starter?
Hobbyking 3S1P 1800mAH, 20-30C discharge on Sullivan Dynatron. I start my DLE30cc engine about 10 times over the last weekend, and I used 10% of the batt according to the Cellmeter pro.
It spins the engine with ease.
3S works fine as long as the batt can provide sufficient current to the starter without voltage drop.