Are two 50c (100c burst) 3s 2200mah lipo battery packs ok to use with the mamba monster?

I'm assuming you're running them in series to get 6S....the discharge rate (2200mah X 50C= 110A discharge) is awfully low, let alone runtime. I know Castle themselves wouldn't recommend it. If parallel, the discharge rate (4400mah x 50C = 220A discharge) would be ok but speed and torque would be severely lacking. Whats this in and what motor are you running?

I have a e revo mamba monster. What is the equation you used to determine the amperage?

If you're going to run 6S in an E-Revo, you'll want around a 150A discharge to be on the safe side IMO.....mah (ie: 4000) x C rating (ie: 40C) = discharge. That example would give a 160A discharge. Even if you have say, a 25C lipo but with 6000 mah, that would give you a 150A discharge.

I wouldn't run those lipo's you have, too low a discharge AND runtime IMO.