I bought some cheep LED glowstick and when ever i kept on hitting them with something they just simply turned off

so i got some clear tape and i wrapped it around them very tightly and then they work just fine altho i do have to say that the baterries become on issue . . . they seem to be a bit to pricy and i dont think they make mini battery charges . . or do they?

in the other hand they are good to practice freehand if you take it very slow i dont recomend them for stinging