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http://www.amazon.com/IMAX-Quattro-B.../dp/B003F1OAGQ
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There is the link to the charger i purchased if you were wondering. There are seperate pieces for balance charging. I got 4 as i charge all mine before i head out ill run my first set of batteries, wait ten minutes for the buggy to cool off. Ill pop my second set in and start charging the two back up. I have a ac/dc converter for my truck and i use a table attachment i made for my trailer hitch to my vechicle. This way its charging on a surface away from my truck so that i can watch them from the track tower. If at home ill kill both sets and then let them charge while im cleaning the buggy and checking for lose or broken parts.