This is the $5 battery that you need for our EcoStar Vapes. Buy the battery when you buy your first disposable vape cart. Recharge the battery while it is inside your vape cart with a standard charging cord. If the battery ever dies and will not recharge, return it to the shop and we will trade it for a new battery. If you decide you no longer want to use the EcoStar vape and no longer need the battery, return it to the shop for a rebate of $5.