As I mentioned above there isn’t too much to review about the battery. It is a 2600mAh tube mod style battery and is 22mm wide and 81mm in length. It works well with the iJust 2 tank and together they make a good combo for those who want a no fuss, simple to use vape. The whole iJust 2 kit is also very reasonably priced, making it a good value for money buy.