Product details?this is a? rechargeable battery, is known as lithium battery 18650 type and this particular one is 2000mAh capacity and it can be used for your various devices which needs a replacement functional batteries such as rechargeable table and hand fan, mp3 and bluetooth , radio, cameras and so on? ?each is of 2000mAh capacityits 18650 type3.7 Vits rechargeable type for various devices e.g recghargeable table, desktop and hand fan, mp3, radio , cameras etcrechargeable lithium battery, with superior cell with high performancelong lifespan batterydurablelong lasting?effective and efficient