All lithium ion batteries, whether in ecigs or laptops or phones, have the potential for overheating and failure. Joyetech batteries and chargers, however, come with overcharge protection circuitry that shuts down the battery or charger if something goes wrong. This makes them much safer than the knockoffs, but no battery is 100% protected. When using lithium ion batteries, a little common sense goes a long way. If your battery gets hot while charging or using, stop using and replace it. If your battery is damaged by dropping, etc, stop using and replace it. And always ONLY use Joyetech batteries with the Joyetech charger made for that battery. NEVER use off brand batteries with our chargers, NEVER use off brand chargers with our batteries. Keep it simple and NEVER use off brand anything. http://wasatchvapor.com/Shop/viewcategory.php?groupid=2
