I'd guess that for our application that would be fine, if it takes 60 minutes to charge a 5000mah pack at 5 amps, if you were discharging at 100 amps the pack would dump in 3 minutes.
I'm sure there's more to it than how I've worked it out (inefficiencies ect) but I would think enen the most beastly 1:10th brushless systems would have trouble dumping a 5000mah pack in 3 minutes
