This is a short little 'ible, on how to improve your 9 volt batteries! Usually, when i camp, i use these little LED 9 volt clip flashlights that i make myself (shown in the 'ible) I usually coat my 9volts with Duct Tape for extra grip and strength. This will partially water proof and strengthen the battery, but most of all it adds an excellent grip!
Step 1: Duct Tape! What Else?
Get your duct tape roll, and then put the battery standing up next to it. Usually with duct tape brands, the roll will be a little bigger/taller than the battery...but with some generic brands, it might be the exact same height. Then tear off a piece that is about 8-10 inches depending on how thick you want the cover to be.