This AAA Active Dummy Cell Battery is used to replace a real AAA battery in flameless LED candles and other electronic devices that use one or more AAA batteries. It has an 11” long thin flat flexible cable (FFC cable) with a 5.5mm x 2.1mm barrel socket at the end and works with the barrel plugs on all of our Battery Eliminator Kits and Accessories (Power Splitter Cables, Power Extension Cables, AC to DC Wall Power Adapters, etc.). Works by itself or in conjunction with our AA Passive Dummy Cell Batteries and the appropriate AC to DC Wall Power Adapter to eliminate expensive batteries that are constantly having to be replaced. Please read the detailed discussion and diagram for the components that make up a complete Battery Eliminator solution. Stop changing out dead batteries and start saving money with our battery eliminator kits & accessories.