Features: LR20 D size fake battery connectors with input wire, length 25cm, red positive electrode, black negative electrode, positive and negative poles not connection, used to connect power adapter to provide power to desk lamp fan toy. D size battery connectors, 0V as conductors, without charging function, positive and negative electrode connection power adapter can be used for various electronic devices. It is not a real battery, there is no real power, and the positive and negative electrode do not conduct. It is mainly used for DIY power supply by welding wire. Cannot charge, can be used with a corded power cord or adapter. LR20 D dummy battery virtual battery placeholder, battery elimination accessory, half finished product, requires direct current power adapter to connection for use. Specifications: Material: Metal Color: blue Height: about 61mm/2.4inch Diameter: about 34mm/1.34inch Line length 25cm/9.84inch Quantity: 1 set Package Includes: 1 Piece LR20 D Dummy Battery Placeholder with Female Port 1 Piece Male Wire note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.