What's wrong with it.
Lipo fires are very violent.
If the mfg states a 1c then why would you not follow it?

The 2 amp difference from 1c (on your 5000 pack) to 7amp charge rate would not shave that much time off the charge time. Why not just follow the mfg and charge at 5amps?

When they go they go all at once..

http://www.youtube.com/watch?v=C5_-eBbDE0s&sns=em

http://www.youtube.com/watch?v=B-AoAYrEy-o&sns=em

http://www.youtube.com/watch?v=IsgnZCEeqsE&sns=em

Bottom line is:

• charge in a safe bag
• Never overcharge
• Follow the mfg charge rate