Features: 100% Brand new and high quality! Discharge rate, no''memory effect'' Low reoccurring operation cist, Short -circuit and over-current protection Safe and environmental friendly Keep in a dry and cool place Specifications: Brand Name:Daweikala Capacity: 9800mAh Voltage: 3.7V Chemistry: Li-ion Color: Green black Size: 65mm(Length) x 17mm(Dia. Package Included: (2/ 4/6/10/20/50 pcs)Daweikala 3.7V 18650 9900mAh Li-ion Rechargeable Battery Note:According to different conditions, Battery capacity can be divided into actual capacity, theoretical capacity, also called rated capacity. Battery capacity refers to the battery storage capacity. The unit is "mAh", 1Ah = 1000mAh, so there are some differences between rated capacity and actual capacity in Li-ion Battery. It is normal and reasonable.