Features: - Rechargeable battery with re/discharging protection circuit - Low reoccurring operation circuit、 Short -circuit and over-current protection - Safe and environmental friendly - Perfect for flashlight or electronic gadgets - Keep in a dry and cool place Specifications: Capacity: 9900mAh Voltage: 3.7V Chemistry: Li-ion Color: Yellow、 Red(Dear、please leave us message which color do you want、 otherwise、 we will send you the Yellow one、thank you~) Size: 63mm(Length) x 17mm(Dia.) Package Included:2pcs 3.7V 18650 9900mAh Li-ion Rechargeable Battery