Hey Tom,<div></div><div>I would chuck the supplied charger and invest in a smart charger. The supplied 1700 mAh batt packs will run anywhere from 10-20 min (depending on usage) It's really up to you what you need. If you plan on running your tank for up to an hour or more, then yeah...your gonna need to invest on larger power capacity batteries in the 4500-6500 mAh range...or more if you want. But it sounds like you have yourself enough batteries for what you need unless your going to do some hardcore all day battling. Use the 1700 mAh batts for casual runs and use the 3000 mAh batts for battles........unless you do alot of running! lol

These are what I got...and frankly...it's overkill. Cause there's no one near me to battle so I tire out from driving in the dirt by myself! lol They last more than an hour for sure. If your running high capacity batts, it'srecommendto have a pc fan installed over the fets to keep them cool.http://cgi.ebay.com/2x-7-2V-6800mAh-Battery-Charger-Car-Tamiya-Plug_W0QQitemZ170356678042QQcmdZViewItemQQptZRadio _Control_Parts_Accessories?hash=item27aa0c9d9a#ht_ 904wt_939<br type="_moz" /></div>