Rubber Battery Holder (4 Pieces)
These rubber battery holders are made for 18650 batteries. They protect the positive and negative ends of the battery from making contact with any items that may activate them. It protects the battery from moisture, and also features a small ring that allows it to sit comfortably on any standard key chain. They come in clear (white), green, pink, orange, blue, and yellow!
These Battery holders are $2.99 for 4 of them!