[" Features: Replace 4 to 8pcs 1.5V AA LR6 AM-3 AAA battery QC3.0 USB power supply cord,This eliminates the need for 4 to 8pcs 1.5V AA LR6 AM-3 AAA batteries,also can replace 1pc 9V battery. When QC3.0 USB input,clip output is 5V-12V adjustable voltage,your USB adapter must with for QC 3.0 12V output,if standard USB 5V input,output is 5V,can not change voltage. Press the button voltage to change 0.2V each for time, adjust to the maximum voltage and then press the button voltage to reduce 0.2V each for time. When the voltage is set to 12V, the next for time you use the default 12V, only supports QC3.0 wall or car USB charger or QC3.0 USB power bank. 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. Suitable for 5V 6V 8.4V 9V 12V and more 5V-12V devices,note,this cable can not use to charge battery,only as power supply cable,black clip is negative poles,Red clip is postive poles. Specifications: Black clip cable is -,Red clip is + Input Voltage: QC3.0 USB charger with 12V ouput Output Voltage: DC5V to 12V(can adjustable voltage) Output Current: 1A max Max Output Power: 12W max Cable Length: Approx. 100cm Color: Black Quantity: 1PC (other accessories in the picture is not included) 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: 1 X QC3.0 USB to 5V-12V adjustable voltage Cable"]