Features: No Need To Change Battery Frequently: With this AA AAA battery eliminators USB cable,you don't need to buy more replacement batteries when the batteries run out,saving your money. Power supply from USB or Type C charger,USB C powerbanks,car charger and more USB adapter,input USB or Type C 5V2A,output DC1V to 24V 3W. Press the button voltage to change 0.1V, and then long press the button voltage to change 1V,come with 8pcs Dummy battery(4AA+4AAA),if your device is over 7.5V,need to buy more dummy battery by yourself. Replace 1 to 8pcs 1.2V or 1.5V LR6 AM3 AA LR03 AM4 AAA battery USB power supply cord,This eliminates the need for 1 to 8pcs 1.2V or 1.5V LR03 AAA LR6 AM-3 AA batteries,Dummy battery is conductor,no power,with output voltage display,easy to use,2-in-1 design,can powered AA+AAA device. This eliminates the need for 1-8pcs 1.2V 1.5V AAA AA batteries. Suitable for Radio,electric toy, holiday LED lights,Clocks,Telephone,Thermometer Hygrometer,Calculator,power remote controller, keyboard,Electronic door lock and more AA Battery power supply devices,Suitable for 1.5V 3V 4.5V 6V 7.5V 9V 12V and more 1V-12V AA or AAA Battery Powered device. brand new and high quality. Specifications: Input Voltage: 5V 2A Output Voltage: DC1V to 24V(can adjustable voltage),3W Cable Length: Approx. 110cm/43.31inch Model: USB,Type C(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: 1 X USB to 1V-24V adjustable voltage Cable with display 4 X AA Dummy battery 4 X AAA dummy battery