Refers toan 18650 lithium battery.
18 in 18650 means 18mm in diameter, 65 means 65mm in length, 0 means cylindrical battery and NBCS is lithium battery.
A battery refers to a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate electric current. It is a device capable of converting chemical energy into electrical energy. .