Features: Rechargeable re/discharging protestion circuit. Low reoccurring operation cist, Short -circuit and over-current protective. Safe and environmental friendly. Perfect for flashlight or electronic gadgets. Keep in a dry and cool place. Specifications: Model: 18650 Capacity: 9800mah Voltage: 3.7V Chemistry: Li-ion Color: Yellow Extension: 65mm (Length) x 17mm Package Included: 3.7V 18650 9900mah Li-ion Rechargeable Batteries