[DonRotolo]

You need to decide if you want a competition-legal charger or something to just charge batteries. Please note that the competition-legal chargers are specified so that you don't damage the batteries by charging too fast, so it does make sense to heed their advice.

That being said, only the 2009 rules will tell us what is legal. It is a reasonable bet that a 6 ampere (max) fully-automatic charger would be good.

We use several chargers, some identical to the Kit chargers, some almost so. The recent kit chargers have nice lights and stuff, but the old chargers seem to be more resistant to user error.

A charger can be had at automotive and marine stores, including sears, JC Whitney (online) and perhaps large wall-o-china-mart stores.

A charger like that might cost about $50, more or less.