Oura Ring 4 Charger - Size 13 - Fast USB-C Charging Dock

In this review the Oura Ring 4 Charger (size 13) is assessed as the straightforward replacement or spare charger for anyone who owns an Oura Ring 4. The bottom line: it is the only official way to charge that ring, and it delivers fast, reliable top-ups that typically complete in 20-80 minutes depending on battery level. If you need a compact, well-built charger to keep at a desk or in a travel bag, this size-specific USB-C dock gets the job done with minimal fuss.

Key Features

• Size-specific design: The charger is made to fit the Oura Ring 4 size stamped inside the ring, ensuring a secure connection and correct alignment for charging.
• USB-C to USB-C cable: The included cable uses USB-C connectors so it pairs easily with modern chargers and laptop ports for convenient power delivery.
• Fast charging: The ring typically charges fully in about 20-80 minutes, so short top-ups restore useful battery life quickly.
• Portable form factor: The dock is small and light enough to carry in a travel bag or keep in an office drawer as a dedicated spare charger.
• App battery monitoring: Battery level is visible in the Oura app by tapping the circular icon in the upper right of the home tab, so you can confirm charge state without guessing.

Who It's For

This charger is for current Oura Ring 4 owners who want an official, reliable way to power their wearable at home, at work, or while traveling. People who prefer a compact spare charger to stash in a bag or at the office will appreciate the small size and quick charge times.

It is not for users of other ring models or brands, since the dock is size-specific for the Oura Ring 4. If you do not know your ring size, check the inside of the ring before ordering to avoid a size mismatch.

Pros & Cons

Pros

• Well-made, compact design that is easy to store and travel with.
• Fast charging speeds that typically complete a full charge in under an hour and a half.
• Simple USB-C connection that works with common 5Vdc supplies for convenient power options.

Cons

• Price is perceived as a bit high by some customers for a single-purpose spare charger.

Specifications

Product	Oura Ring 4 Charger (Size 13)
Compatibility	Oura Ring 4 (size-specific)
Cable type	USB-C to USB-C
Power requirement	External 5Vdc supply that complies with IEC 62368-1
Typical full charge time	20-80 minutes, depending on battery level
Included	Charging dock and USB-C cable

Our Verdict

The Oura Ring 4 Charger in size 13 is the recommended accessory for anyone who needs a dependable, compact way to charge an Oura Ring 4. Its size-specific fit, USB-C convenience, and fast charge times make it a practical spare or replacement, particularly for travelers or those who keep chargers in multiple locations. It represents good value if you prioritize reliability and portability over cost.

Frequently Asked Questions

How do I know what charger size to buy?
Check the inside of your Oura Ring 4 where the size is stamped; buy the charger that matches that size.

How long does the ring take to fully charge?
Charging typically completes in about 20-80 minutes depending on the ring's remaining battery level.

What power adapter should I use?
Use an external 5Vdc supply that complies with IEC 62368-1; the cable is USB-C to USB-C for modern chargers and ports.