When choosing an electronic cigarette, there are a few basic features to look for. The atomizer is arguably the most important part, because it does the actual work of heating the e-juice and converting into vapor, so you can inhale it much like you would tobacco smoke. This therefore determines the taste and intensity of the vaping experience.
The next feature to look for is the battery capacity. A larger capacity means your electronic cigarette will last longer between charges. The best electronic cigarettes usually come with high-capacity batteries that will comfortably get you through the day. The final consideration is the tank capacity, which determines the amount of e-juice you can hold in your electronic cigarette. This maybe a secondary consideration, but like with battery capacity, you probably want to be sure it will last at least a day without refilling.