I just got the heads up that OhmBusters (on eBay) just stocked an 18650 Battery Holder in 4 different colorways: black, clear, glow & orange. And, each costs just $4.95 with FREE STANDARD SHIPPING included. Each 18650 Battery Holder can hold up to 4 batteries (not included). Seriously… $4.95 to make sure that your batteries don’t short out in your pocket, car, luggage, backpack, etc. is a small price to pay. This is something you should pick up if you tend to bring backup batteries. It’s one of those things that you’ll be kicking yourself for not picking it up when you DIDN’T need it yet.