Features: Replace 2 to 8pcs 1.5V AAA LR03 battery power supply cord,This eliminates the need for 2 to 8pcs 1.5V AAA LR03 batteries. 2AAA model is 3V,3AAA model is 4.5V,4AAA model is 6V,6AAA model is 9V,8AAA model is 12V,if your device needs 2pcs AAA battery,please choose 3V version,if your device needs 3pcs AAA battery,please choose 4.5V version,and so on The black clip is connected to the negative poles of the product, and the red cable dummy battery is connected to the positive poles. Suitable for 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 No Need To Change Battery Frequently: With this AAA battery eliminator USB cable,you don't need to buy a lot of replacement batteries when the batteries run out,saving you more time and money. Power supply from USB or Type-C charger,USB power bank,car USB charger and more USB or Type-C power adapter,If it cannot be used after installation, please check whether the dummy battery is installed in the wrong direction and whether the voltage matches the product. Some mobile power bank sources have an automatic power-off function, and the output current of 90mA will automatically power off. It is recommended to use wall USB Adapter. Specifications: Black clip cable is -,dummy battery is + Color: Black Material: Plastic Power Cable length: 100cm/39.3inch USB input: DC 5V 2A output: DC 3V/1.5A,4.5V/1.2A,6V/1A,9V/0.7A,12V/0.5A(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 Cable 1x USB C convertor