Features: brand new and high quality. Replace 3.7V 18650 or 26650 Size battery USB power supply cord. This eliminates the need for 18650 or 26650 batteries,Black cable is -,Red cable is +. No need to change battery frequently: With this USB Cable,you don'for t need to buy a lot of replacement batteries when the batteries run out(need use your own USB adapter) Power supply from USB charger car USB charger and more USB adapter. If your has an automatic power off function, it will be powered off because the current is too small. It is recommended to use a USB charger to supply power.
Specifications: Black cable is -,Red cable is + Color: Black Material: Plastic Power Cable length: 100cm input: for DC 5V 2A output: for DC 4.2V/1A Max
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!