The 650mah battery but with the magnetic charge feature. For use with the Black Tip Refill Cartridges and Clearomizers: Mini Vivi, Vivi & M3 These are replacement poles for the Magnum Series Kits, or for customers who would prefer to smoke a non-traditional looking elegant looking e-cigarette. The Magnum Series has the new magnetic charge feature, with huge battery capacity of 650mah. Comes complete with Best4ecigs 30 day Warranty