ORIGINAL: ginnz
dave, i have the cellpro 4s revolution charger and can charge any lipo at 3C, ive done a couple to see how well it works, and it works well, but i basically keep it at 2C for normal charging/balancing. the cellpro 4s is a great charger IMO, it has manual rates, and auto rates, the auto rates is what i normally use, and itll start out slow, then add amps as it goes, then throttles down at the end during balancing. i got mine from Ka-Planes.
a very safe charger, and a good investment if you own lots of lipo's and want to take care of them.... hope this helps.
I love mine and for less than 70$ you get great information from the Cellpro4, piece of mind and plug and play. It even has a mode that will recover a well drained battery. They also have the Cellpro10 instock again in case you are using brcks in your 500 and 600 siz electric helis.
Jim