Features:USB one to two 2xAA dummy battery elimination cable, widely used for decorative LED lights, walkie talkies, doorbells, toy, remote control, etc.Input USB 5V2A, output 4.5V1A, convenient for use, replacing 3 1.5V LR6 AA batteries.Replacing three 1.5V LR6 AA batteries, the product can be used to power two 4.5V AA batteries simultaneously.Save money and be environmentally friendly, eliminating the need for frequent battery replacement.It can be powered by a mobile power supply, computer, or USB adapter.Specifications:Material: PlasticCable Length: Approx. 96cm/3.1ftInput: USB 5V2AOutput: 4.5V1ANote:Please allow 12cm errors due to manual measurement.Please allow for slight color differences due to different display resolution.Package includes:1 Set USB 5V2A to 4.5V 2xAA Battery Elimination Cable