So I'm upgrading here in the next few days to a box mod with removable 18650 batterys and thought I'd brush up on my safety because FIRE BAD. 1.) Don’t carry batteries in your pocket or purse. This sounds like a good idea but a short can set your pants or your purse on fire. Getting a battery case is a good idea you can buy a few for the cost of a single battery. 2.) Do not leave batteries in extreme heat. Heat is the arch-enemy of batteries it can cause the battery to ware out faster and in extreme temperatures like in side of a car on a hot day can cause a battery to explode and torch your car. 3.) Never leave your charging batteries unattended. Lets face it you probably got your charger from china, and yes even if it says made somewhere else most of the components where made in china. Overcharged batterys can vent on a charger and cause fire. 4.) Make sure your batteries are properly wrapped. The pvc wrapping that goes around your batteries may seem decorative to those without experience, but it is actually a key component in making sure that your battery is safe. Faulty wraps, especially around the positive and negative contacts, can cause your battery to short. Any others feel free to post up I'd hate to see one of our members loose something important to a fire.