Features:100% brand new and high quality.Use this product to replace the AA AAA battery, which is pre-configured with black current-limiting power packs, and yellow is straight through.1x Black Dummy Fake battery output is 4.5V Replace 3x AA or AAA battery,2x Black Dummy Fake battery Replace 2x AA or AAA battery,Yellow Dummy Fake Battery is Link function.Replace 2x or 3x AA AAA battery power supply cord.This eliminates the need for 2x or 3x 1.5V AA AAA batteries.Suitable for Radio,electric toy, holiday LED lights,C-D player,Clocks,luminara candles,Calculator,power remote controller, keyboard, Christmas advent calendar display,Walkman and more 3V or 4.5V power supply devicesNo Need To Change Battery Frequently: With this AA battery eliminator adapter,you don't need to buy a lot of replacement batteries when the batteries run out,saving you more time and money.Easy to Use: Put the adapter correctly into the battery case according to the positive and negative poles.Designed for devices that use 3 AA or AAA batteries. Specifications:Color: BlackPlug Type: EU Plug Battery Type: AA, AAA(opitonal)Material: PlasticPower Cable length: 300cminput: AC 100-240V-50/60HzMax output: DC 4.5V 800mA(max) Note:1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes:1x Power Adapter 1x Power Supply Cable1x Black Dummy Fake Battery2x Yellow Dummy Fake Battery