Features: 0V 18650 fake battery holder, fake battery connector, positive and negatived electrode not connection. 18650 battery connector tube, 0V used as a conduction conductor through wire, with a 5.5x2.1mm/5.5x2.5mm female input interfaces (inner positive electrode and outer negatived electrode), battery eliminato accessory, can be used for various electronic devices by connecting to a power adapter. It is not a real 18650 battery, without real power, and the positive and negatived electrode are not connection. It is mainly used to connection 4.2V power adapters for power supply. Cannot charging, can be used with a USB power cord or adapter. 18650 fake battery virtual battery placeholder, suitable for power supply. Specifications: Name: 18650 Virtual Battery Placeholder Empty Battery Setup Shell 0V not Conduction Solderless Terminals Plug with DC5.5mm Cable Component: plastic + metal Color:green Interfaces: 5.5x2.1mm female , 5.5x2.5mm female (optional) Height: about 65mm/2.56inch Diameter: about 18mm/0.71inch Cord length: 28cm/1.1inch Package Includes: 1Pc 18650 Virtual Battery Placeholder with DC5.5mm Input Cable note: Cannot charging, internal empty shell, used for conducting electricity through wire. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.