When I tried the YN560 with a watch in my hand I found that the recycle time in full power between the first two shots is actually about 2 s with fresh Eneloops. However recharge for the 3rd, 4th, ... shots would seem to take a bit longer (~3 s) and a half dozen full power flashes in rapid succession results in the 'ready' light going blinking for a few minutes with the flash disabled presumably to avoid overheating. So the folks at Quantum Instruments, Dyna-Lite, ... need not to worry
. As mentioned this is much improved at partial power. At 1/4 output it would seem that I get a sustained cycle time of around 1 s (30+ shots without protection kicking in), which is still plenty useful these days when the ISO can be cranked up to 400 or even 800 with virtual impunity
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