Plug the cable into the Insight (see photo below) ensuring the connector is fully inserted. Attach the cable to an active USB port on your PC or charger. There is a red and green LED located below the power button which will light orange when the charging and green when complete.
Charging Port & LED Indicator
Note the device requires 5V supply and it draws a maximum of 0.5 A from the charge port. If it is plugged into a USB port on your PC, the Insight will check for the maximum available current from the port up to a limit of 0.5 A. Note that if the port does not support extended power mode, Insight will draw 0.1 A and it will charge much more slowly. Try a different USB port if Insight takes more than 2 hours to reach full charge.