This:
http://www2.towerhobbies.com/cgi-bin...?&I=LXKRS1&P=7 is what you need. I have this in addition to a Kavan starter and between the two I've got plenty of starting power. The Kavan is a little pricey when you add the battery case & battery but- at least to me- is well worth it. Dragging cables and a heavy battery isn't my idea of fun.