This is the hot setup at our track, power supply built in with discharger and fans. Guys cycle 40amps all day long and no issues!

Haha.

The "setup" at our track is now two ichargers. One for charging at 70 amps, and the other strictly for discharging.

Now thats getting serious!

It's a little much for me.

I'll stick with a single 406B and 70 amp charging.

Yea, people already freak out about charging at 40amps... let alone 70amps. People don't realize that it can be done safely as long as you know what you're doing and have good equipment. I normally don't cycle my batteries anymore but love charging at 20-40amps just so I'm not waiting around for batteries!

I was charging at 40 weekend before last.

Man, after charging at 70, 40 takes forever! It took like 6 minutes!