So I just got this charger and I’m using the rl 12 volt 75 amp 900 watt power supply. I have no problems charges two 2s lipo batteries at 40 amps each but I can only charge a 4s lipo at about 28 amps and a 6s lipo at about 19 amps. Does this sound about right? Looks like each channel is making out at about 470ish watts. What do I need to charge a 4s or 6s battery at 40 amps? I guess I need a 24 volt power supply? Does anyone actually run a 24volt power supply?