Though each product that makes up the use of an electronic cigarette is important, a working e-cig battery is vital to continue vaping. In this category, we offer various battery types, some being internal and housed by the e-cigarette device itself, while others are external and can be placed into a mod. Each battery has a millamp-hour (mAh) rating. The higher the mAh, the longer battery life you'll receive. Browse through our Batteries category and choose the battery that suits you best.