Guys I run the new Hyperion packs. I run the 3300mah 35C 6S packs. I have chargered it at 15 amps twice just to see if there was any difference, I saw none. The pack did not get hot or anything. I normally charge at 2C 6.6amps. The reason I do this is why force the packs to take that much power when you have time to charge. Here are normal charge times in a perfect world.

1C = 1 hour
2C = 30 min
3C = 20 min
4C = 15 min
5C = 12.5 min.

As you can see you only get a huge increase going from 1C to 2C.

You should buy a charger that will charge 2 packs at once and charge them at 2C that would be the same overal time as 1 charger charging 2 packs at 4C.
http://www.teamhelotes.com/catalog/i1267.html



Here is a good price on a 43 amp power supply, plenty of power to runn the best charger on the market.
http://www.teamhelotes.com/catalog/i1422.html