18650 Battery FAQ
As with all high-powered batteries, basic safety precautions should always be followed to reduce the risk of fire, electric shock or personal injury. Do not allow the battery terminals to come into contact with metal objects. This can lead to a possible short circuit or fire. Do not subject the battery to strong impacts or shock. If the battery (or device) is dropped onto a hard surface, promptly remove batteries to a fire resistant location and inspect for damage. [...]