I also bought 14cells of these new 4500's. They should arrive Sat or Monday.

I will be building them side/side with bars and 12ga leads.

I use Astroflite 112D chargers $130. I charge my 4x 6c-GP3300's at the same time @50min at 4.5A.

Breaking them in:
1- Slow charge @2A until peaked, wait 2 hrs then discharged @1.5A down to 0.90v/cell. Then wait 60 minutes.
2- Slow charge @2A until peaked, wait 2 hrs then discharged @1.5A down to 0.90v/cell. Then wait 60 minutes.
3- Slow charge @3.5 A until peaked, wait 2 hrs then discharged @1.5A down to 0.90v/cell. Then wait 60 minutes.
4- Slow charge @4.5 A until peaked, wait 2 hrs then discharged @1.5A down to 0.90v/cell.

I will post the numbers after the initial 4 break-in cycles.

Then posting 10 "Real world numbers" gained in my SV27 with cooling mods and worked Prather Bronze 220 2-bladed prop.. Charge at 4.5A and run them twice a day, at least 2hrs between charging from 1st run.

-WL