Mini Butterball Rechargeable 26650 Battery 2Pcs 3.7V 6000mah Protected Li-ion Blue Batteries for Flashlight Electric tools Electric bicycles Electric Vehicles Battery Type: High performance 6000mah 26650 rechargeable battery (2pcs). High Safety: Discharging and charging protection circuitry built-in. High energy density, long life battery High Quality: With strict quality control to provide greater reliability of the product. Universal Apply: flashlight, LED torch, digital camera, toy and other digital products. Note: it is button top battery, will not suitable for some device which use flat top battery