These sleek and modern batteries by Silo are the smallest batteries weve seen; they fit perfectly in the palm of your hand! Each 500mAh Lithium-ion Battery is draw activated; meaning theres no button pressing. Simply pop in your favorite flavor or blend and puff away! This particular vape battery comes with a charging micro USB cable. Choose from four lovely metallic matte colors: black, grey, blue, or pink! Included in the Box: Ccell Silo 500mAh Lithium-ion Battery 2 Magnetic Adapters USB Charging Cable Warranty Card ***Please note that some cartridges may not be compatible with this battery due to different resistance levels. We recommend using a CCell cartridge .