In my excitement to use my new knife/torch tool I took the 4 LR41 batteries out of what I thought was disposable wrapping and put them in the small LED light that fits on top of the pocket knife. The light works fine. I then read the instructions which said that the batteries shouldn't be removed from the reusable latex sleeve. What's the sleeve for? Will any damage be caused by not using the sleeve? I would appreciate any advice please.