Charging the Controller - IQ (1st gen)

The Controller can be charged with a USB Cable (the recommended method) or with a Tether Cable. This article will cover each of those charging methods.

Charging a Controller Battery with a USB Cable

Connect the Controller to a Computer or other USB power source.

  • Connect the microUSB to the Controller’s Charge port and the USB to the computer or other USB power source.
  • Ensure the Controller is turned on.

NOTE: The Controller can also be charged by connecting the USB cable to a USB wall adapter.


Charging a Controller Battery with a Tether Cable

  1. Tether the Controller to the VEX IQ Robot Brain.
    • Connect one end of the Tether Cable to the powered-off Brain with a charged VEX IQ Robot Battery and the other end to the Controller.
    • Listen for the “click” when the Tether Cable is inserted into the Controller and Brain to confirm that the Tether Cable is attached securely.

NOTE: Charging the Controller this way is will partially deplete the Robot Battery’s charge.


  1. Turn on the Brain to begin charging.

Indicator Lights

NOTE: There are three possible colors for the Charge/Game LED: green, red, and gray.

Charge / Game LED Color   Status

Solid Green Controller Battery is completely charged

Solid Red Controller Battery charge in progress

Blinking Red Controller Battery fault

Off Not charging

For more information, help, and tips, check out the many resources at VEX Professional Development Plus

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