My current HDS has a HUGE starter, and a reasonably big battery. I would like to replace them with the lightest substitutes possible, but also want to make sure that they are up to the task. The engine is a Continental O-200, 100HP.

I am considering the Concorde RG-12LSA for my battery; does anyone know what the minimum CCA and whatnot I need for the Continental? I have even heard from some that you can use a motorcycle battery; does this sound kosher?

As far as the starter goes, I'm not exactly sure which ones are compatible and/or appropriate for the engine and aircraft. Any insight from y'all would be much appreciated.

Thanks