How to Use Your Gen3 Charger

Introducing the Gen3 Charger

You can purchase additional chargers directly from our website.

Every Oura Ring purchase comes with a charging kit, consisting of a charging dock and USB cable (Type-C), which will need to be connected to a separate power source (e.g., laptop or power brick). The charger's USB power cord is intended to be supplied by an external 5Vdc supply that complies with IEC 62368-1 standard. The power available to the equipment should not exceed 15W after 3 seconds.

Gen2 and Gen3 chargers are compatible with both Gen2 and Gen3 rings. However, the Gen3 charger includes a new red-green-blue (RGB) LED to help communicate its charging status to you. Please note, this color functionality is not supported when charging a Gen2 ring on a Gen3 charger.

LED Color Reference


All Oura Ring chargers are size-specific and intended to be used with the ring it was shipped with. Your charger’s size can be found on its underside. You can find your ring size on the inner band of your Oura Ring, next to the QR code. You can also tap the battery Icon_Ring_Battery.png icon in the upper right-hand corner of the Home Icon_Home.png tab on your Oura App, then swipe left. You’ll see it listed to the right of "Model and size," directly beneath the image of your ring.

Charging Your Ring

Your Oura Ring can take anywhere from 20-80 minutes to fully charge, depending on its current battery level. You can check the battery level by tapping the battery Icon_Ring_Battery.png icon in the upper right-hand corner of the Home Icon_Home.png tab.

To charge your ring:

  1. Connect the USB cable to your charging dock and plug the other end into a power source, such as a USB wall plug, laptop, or power brick.
  2. Place your ring on the charging dock. The LED will pulse white while your ring is charging.
  3. When the LED turns green, your ring is fully charged. You’ll receive a push notification from your Oura App when charging is complete. Keep in mind, this push notification will only appear if your Oura App is open and running in the background of your device (i.e., not forced closed). This also applies for low battery notifications

If you’re setting up your ring for the first time, the charger’s LED will blink blue if you haven’t paired your ring, Oura App, and device over Bluetooth yet. You should see this under two circumstances:

  1. you’re setting up your ring for the first time or
  2. you’ve performed a factory reset on your ring and did not re-pair it to your device afterward. 

Once you’ve paired your ring to your device via Bluetooth and successfully established a ring connection in your Oura App, the blinking blue will turn to solid blue, and then fade into white. 

If the LED doesn't light up, check to see that your charger’s cable is properly connected and your ring is positioned correctly, ensuring good contact between your ring and the dock. If you're still having trouble, please refer to our charging troubleshooting guide.

If your charger’s LED turns red, there may be a problem with your ring. If the light is blinking red while the ring is on the charger:

  1. Take the ring on and off the charger a few times to see if you’re able to establish a proper charging connection (indicated by a flashing white light).
  2. Make sure your ring has the latest firmware installed. A message will appear at the top of your Oura App's home tab if a firmware update is available.
  3. Try performing a factory reset of your Oura ring. See this article for factory reset instructions.

If you still see a blinking red light after trying the above steps, there may be a problem with your ring. Please reach out to our team here with information regarding which troubleshooting steps you've already taken.

How to Purchase Replacements

You can purchase additional chargers directly from our website.

Was this article helpful? 223 out of 317 found this helpful
Back to the Top