I got a used GX200 from eBay a while ago. I'm planning on building a mud motor for my john boat. I was looking into electric starter kits as well , and I saw they came with charging coils. When I tore the GX apart I saw it already had the charging coils and magnets on the fly wheel (no ring gear). what kind of out put does the charger have? I would like to keep a 12V deep cycle marine battery topped off if possible.