I have this hooked up to my 306b and charge my 4 6s 3300 packs at 30a without issues except now im done in minutes and not hours. Thats a little over 2C compared to 2a with my old setup. The unit is solid and looks to have been made with quality.
Of course the service at PRC is above all others.
PowerMax PM3 Submitted by krauley on 7/31/12