DIY 12V-24V Adjustable Battery Charger Power Box Holder with LED Light for 18650 Battery

Specification: Cell type: 18650 battery Material: Plastic Size: 110*80*22mm Weight:150g Battery: 4pcs 18650 lithium battery (Not included) Output: 5V2A 7.4V3A 8-25V(Arbitrarily adjustable) Battery display: Two green light - high quantity of electricity One green light - middle quantity of electricity Red light-low quantity of electricity Features: 1.. Support replacement of 18650 Li-battery. Easy to use and secure 2. Can also be use as Battery charger for 18650 batteries 3. Plug and Play, power output using the USB port, plug the data cable to achieve portable, ready to charge 4.The output voltage is 5V to 24V,the range of the adaptation is very wide,and the power is large. How to use? 1.When you turn on the switch,at least one light will bright normally. 2.Plug the 8.4V DC port to charge,it will show red light when charge it, full of electricity,it will show green light. 3.If you want to change the voltage,open the battery box,use the screwdriver to twisted the precision adjustable resistor,if you rotate it clockwise,it reduce,conversely,it will rise. Packaging included: 1X Battery Box