Product specifications: Name: 18650 capacity capacity: 9800 mah charging voltage: 4.2 V rated voltage: 3.7 V net weight: 48 grams per unit product size: 18 65mm operating temperature:Charge: 10-45 C, discharge: -20-60 C, storage:-20-50 C. Warm Tip: in order to better extend the cycle life of the , this model of recommended 3 months recharge maintenance once. The is not used for a long time. Please keep the in a sealed, dry and cool place to prevent the from being weakened by environmental factors.The electric core performance is stable, the internal resistance is small, the use is widespread, the power is abundant. It can be recharged, energy-saving and environmental protection, economic and durable, safe and non-leakage, use more assured. Multi-protection of the to ensure safe use and extend service life. High Capacity 18650, fan, can be used.