Power Level：
- L1: 4.5-5.5V
- L2: 5.5V-6.8V
- L3: 6.8V-7.4V
- L4: 7.4V-8.0V
- L5: 8.0V-8.4V
Size: 2.7*62*15.8MM
Cable Length: 140MM
Operaction:
- Red cable to positive, black cable to negative, press the red button, it will show the capacity of battery.
- Release the finger, LED lights will go out, light board line off, no current through.
- Board with reverse function, the line is connected or wrong is no problem, adjust it over
A total of 5 small lights, display power, suitable for reverse converter lithium battery power tips!