It's not something I would use on Lipos. I got one but I use it on nihm packs only.

well thats what i'm going to be using them on probaly 4200's so this will work?

Personally I do not like pulse chargers, linear works better for my IB4200's. My old pulse charger got them up to ~4100mah, and my new 989 gets them to 4400mah with same peak settings.

Ooops, yeah. That $135, should have been for the esc, and then plus the motor.

I'm not as picky as some people. I use my Twin charger on most nimh packs. This includes 4200 packs. Now keep in mind, I currently only have off brand 4200s. I'm about buy some IB4200s and will probaly use my 977 for those packs. It charges two packs at one time as well. Hey, when you run twin Emaxxs it pays to have two twin chargers :027: