Here's what to know about the Oura Ring charger and how to charge your ring.
What's Included with Your Charger?
How to Charge Your Oura Ring
How to Purchase a Replacement Charger
Things to Keep in Mind
What's Included with Your Charger?
Every Oura Ring purchase comes with a charging kit, consisting of a charging dock and USB cable, which needs to be connected to a separate power source such as a laptop or power brick.
The USB charging power cord is intended to be supplied by an external 5Vdc supply that complies with EN 62368-1 standard.
Oura Ring 4 chargers are only compatible with Oura Ring 4. The Oura Ring 4 charger is grey and square and includes a USB-C to USB-C cable.
Gen3 chargers are compatible with both Gen3 and Gen2 rings. The Gen3 charger is black and circular and comes with a USB-C to USB-A cable.
Oura Ring chargers are size-specific and not water-resistant.
How to Charge Your Oura Ring
Your Oura Ring can take 20-80 minutes to fully charge, depending on its current battery level. You can check the battery level by tapping the battery icon in the upper-right corner of the home screen.
We recommend charging your ring at room temperature.
To charge your ring:
- 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
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Place your ring on the charging dock. The charger light will pulse white while your ring is charging
- For Oura Ring 4, align the ring dimple with the charger light
- For Oura Ring Gen3, align the sensor bumps on the opposite side of the charger light, above the USB-C port
When the LED turns green, your ring is fully charged. You'll receive a push notification from your Oura App when charging is complete. 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:
- You’re setting up your ring for the first time or
- 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. Once a ring is fully charged, the LED will turn green.
If your LED turns red or doesn't light up, please see our charging troubleshooting guide.
How to Purchase a Replacement Charger
You can purchase additional chargers directly from the Oura online store.
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 in the upper-right corner of the home screen 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.
Things to Keep in Mind
Ensure Your Ring is Charged Before Bed
We recommend charging your ring to at least 30% before going to bed. If your ring's battery level is low, you may not receive sleep insights for the night.
You’ll still receive a bedtime and wake-up time, but no Sleep or Readiness Score, and no further breakdown of your sleep stages, heart rate variability, respiratory rate, or resting heart rate.
If Your Ring Is Stuck on the Charger
Try gently sliding a flat, non-sharp object, such as a credit card, between the ring and the charger from the side. Avoid using anything sharp to prevent scratching or damage. For future charging, make sure your ring is properly aligned on the charger.
