I cannot find any technical specifications about the flashlight or xenon tube in the kit k5203. I would like to get more light with the single strobe function. The 5 capacitors of 100 uF in series equal 20 uF in total. I measured 290 Volt. So the energy is 0.5xCxUxU=0.84 Joule. For how much energy in a single flash is the tube constructed? If it would be 20 Joule then the capacity could be 475 uF in total for single flash use. If it should not dissipate more than 20 Watt then I would not flash it more than once per second with 475 uF, although the capacitor would not be totally empty after each flash.
The tube used in this kit is a 10W tube.
Unfortunately, I do not have access to the full specs of this tube.
You can compare its size to other tubes with known specs.