Sort of questioning the premise of What to look for in a flash battery pack?: Can a speedlight work significantly faster than on its internal batteries without overheating?
The reason I ask is that I've been running my speedlights on Gen-2 Eneloops. Sure, if I want to run full-power it takes a couple of seconds to recharge. But I imagine that if I cycled at full-power much more quickly I'd overheat the flash after not too many shots. My solution has been to buy the highest-power speedlights I can and run them at no more than 1/8 power. At that level even on internal batteries they can keep up with my 12fps body, and I almost never overheat.
I suppose that for shorter or less-frequent bursts it could be useful to shoot full power with fast cycle times. So:
- How much faster can speedlights run on the best power inputs?
- How long can they run at maximum speed before overheating?
I imagine this would be something like a table showing full-power cycle speed for each power source along with the number sequential full-power shots at that speed before hitting thermal limit.)