Features: Replace 3pcs LR03 AAA battery power supply cord,This eliminates the need for 3pcs 1.5V LR03 AAA batteries,only for 4.5V device use Suitable for 4.5V Radio,electric toy, holiday LED lights,Clocks,luminara candles,Walkie talkie,Calculator,power remote controller, keyboard, Christmas advent calendar display,Walkman and more 4.5V 3AAA Battery power supply devices. No Need To Change Battery Frequently: With this AAA battery eliminator USB cable,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 5V 2A USB charger,power bank,car USB charger and more USB adapter,dummy battery is AAA size,4.6m/15ft cable is very convenient to use 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 AAA Fake batteries cannot be used in parallel, only in series,Can not be mixed with a real AAA battery,Green dummy is fake battery(as conductor,no power ). Specifications: Color: Black Material: Plastic Power Cable length: 460cm/181.1inch input: for DC 5V 2A output: for DC 4.5V/0.6A Note: 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 4.5V AAA Battery Eliminator Cable 2x AAA dummy battery