Just make sure that if you are not using it for long time, take out the battery. There is no need to keep the flash in dry cab.
If you keep using your flash often it should be ok.
I figured that also since the flashes have circuitry/circuit boards in them, just to play safe, place them in the drycabi.
Well.....i keep everything in the dry cabinet...from batt to camera to lens to hood to cards..watever camera related. Cos everything in one place easier to find mah.
Well..batt must take out..esp alkaline. I dunno if you guys have experienced it before, but if you leave batt in their devices for long, it will melt or leak after a long time thus damaging/ destroying your device. And then of cos, the batt may rust after a while. Which is why it is advisable to remove the batt.
And while the batt is in the device, the device will cont to drain power from it, thus reducing the life of the device. This not important except when you are in a third world country where charging of the batt is damn difficult.
welll i just keep mine in my camera bag...with batteries in.... i use them too often anyway/....hahaha