The new Oura ring ships with a new charger. The new charger is only compatible with the new Oura ring.
Ring battery life
- Wireless charging
- Battery life: up to one week
- Charging times: 20–80 minutes depending on how often you charge the ring
Technical specifications of the charger
- One color: black
- Diameter 47.5mm
- Max. height 17.39mm
- Specific to ring size*
- USB-C (USB-A to USB-C cable included)
*Why is the new charger size specific?
The new Oura chargers are ring-size specific, which means, for example, that you can only charge a US6 size ring with the US6 size charger. The wireless charging allows for a seamless inner molding for the ring, but also requires an exact fit between the ring and the charger to ensure good contact.
Partial charging is not count as a full cycle so it doesn't actually matter how often you charge the ring. To optimize lifetime, it is most likely better to let the battery go down to 20 - 40% before a recharge, as maintaining 100% charge all the time may shorten the battery life.
To ensure optimal battery performance, instead of partial charging, charge the ring until the battery is full whenever possible. If ring battery level becomes too low for full sleep analysis during the night, the ring automatically goes to power saving mode to continue monitoring your bedtime, wake-up time and activity.
A loose-fitting ring has to work extra hard to get a good signal, leading to increased battery consumption. Make sure that the ring fits snugly, without being too tight. If the ring's battery consumption is high, try wearing the ring on a different finger to see if that makes a difference.
Battery consumption can also increase if the LED bumps inside the ring are dirty. If your ring uses more battery than usual, washing the ring carefully from the inside can help.
The battery cannot be replaced, but it is specified to have 80% of capacity left after 500 charges, and one charge means six to seven days of 24/7 operation. However, we have added some safety measures to extend battery life, and with that 80% capacity, you can still continue to use the ring for quite some time.
*Any USB-A connector equipped power source works; your computer USB port that outputs power, your cell phone wall charger plug or a travel battery pack. Please note that some travel battery packs detect the device based on the current the device requires. Oura requires so little current that the battery pack might turn charging automatically off. The best travel battery packs for Oura are the ones where the user turns the power on/off.