USBC rechargeable Battery Case Attachment For HIOS BL-2000 What is sold is the external battery case (including battery) with charging cable This is an external battery caes component invented by a 3D printer. With this component, it can be turned into a wireless screw. Only the battery case is included, the screwdriver is not included HIOS BL-2000 small torque electric screwdriver special lithium battery case, using a removable and replaceable 26350 lithium battery with a capacity of 2000mah. The electric screwdriver does not need any modification, plug and play, very convenient. Built-in lithium battery charging, over-discharge protection, and boost circuit. The peripheral dimensions of the battery case are consistent with the electric screwdriver, and the feel is good to use, and the center of gravity is no problem.