Features: No Need To Change Battery Frequently: With this AAA battery eliminator Power supply,you don'for t need to buy a lot of replacement batteries when the batteries run out,saving you more for time and money. Power supply from USB charger,power bank,car USB charger and more USB adapter,removable design, can pass through the small hole of the battery cover,easy to use. Replace 1 to 4pcs 1.5V AAA battery power supply cord,This eliminates the need for 1 to 4pcs 1.5V AAA batteries,green dummy battery is conductor,without power,AAA Fake batteries cannot be used in parallel, only in series. Suitable for Beard Trimmer Toothbrush Make-up Mirror Camera,Flashlights,controller,Radio,electric toy,fan, holiday lights,Clocks,luminara candles,Walkie talkie,Calculator,power remote controller, keyboard, Christmas advent calendar display,Walkman and more AAA Battery power supply devices. if your device needs 2pcs AAA battery,please choose 3V 2AAA,and use 1pc AAA dummy battery,if your device needs 3pcs AAA battery,please choose 4.5V 3AAA,use 2pcs AAA dummy battery,and so on,6V=4AAA Batteries, and so on. brand new and high quality. Specifications: Color: Black Material: Plastic Power Cable length: 110cm USB input: 5V 2A AAA dummy battery output: for DC 1.5V/1.5A,3V/1.5A,4.5V/1.2A,6V/1A(optional) Note: 1.Transition: 1cm=10mm=0.39inch 2.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 USB to AAA Battery Eliminator