EGo style batteries by Joyetech have long been the industry standard in quality for the beginning to intermediate vaper. The internal battery is not removable, but rechargeable. Long the standard for those looking to kick the old habit, Joyetech provides solid function in a standard pen style battery. Looking for batteries for MODS? Click the Lithium Ion batteries to view available types and sizes. Feel free to call Good Vapes with any questions you may have!