Cell’s Colour and Brand may be different from the images shown. We ship randomly. 18650 Li-ion battery is a lithium-ion rechargeable battery and is used in high drain applications due to its superior capacity and discharge rate. The first 4 digits of 18650 indicate its dimension, i.e. 18mmx65mm, and the last 5th digit indicates its shape, i.e. cylindrical. Li-ion batteries can usually boost a 300-500 charge cycle. Features : High energy density High working voltage for single battery cells. Pollution-free Long cycle life No memory effect Capacity, resistance, Voltage, platform time consistency is good. Good consistency and low self-discharge. Lightweight, small size Shape: Cylindrical Battery Battery Type: Lithium-Ion Battery High performance and capacity Flat top to suit many devices fitting. Weight 45gms aprx.