Listen to the Pimp! I have run MaxAmps until the past month, there are def much better batteries out there in the same price bracket, just look around. Go here
http://scriptasylum.com/rc_speed/_top_speed.html this is a VERY useful tool. On the left hand side there is a link for lithium battery chargers. This will help you to choose a power supply for your charger, I'm guessing the OFNA 18 Amp would be a suitable supply and can be found at decent prices. Not sure if Neumotors.com is still having a sale on their batteries but if so I highly recomend them, they are Enerland based cells which are considered to be the best. MaxAmps is a good source for the charger and connectors, but if your serious about this hobby stay away from there batteries till they come out with something better.