It takes about 2 hours to fully charge a completely depleted battery of DrivePro 20. LED light will turn "solid orange” while DrivePro 20 is charging in the off state. The light will turn off automatically when the device is fully charged.
Note: The power requirement of DrivePro 20 is DC input: 5V / 2A. For best charging results, the environmental temperature shall fall between 10°C and 40°C (50°F and 104°F).