Oura Ring 4 Charger Size 5 - Compact USB-C Dock for Fast Charging

In this review the Oura Ring 4 Charger (size 5) proves to be the straightforward replacement or spare charger many ring owners need. It is the only official way to power an Oura Ring 4 and stands out for its compact size and reliable charging speed, typically bringing a depleted ring to full in roughly 20-80 minutes. For anyone who travels, keeps a charger at work, or wants a small backup unit, this charger delivers the single biggest benefit: a simple, dependable method to restore your ring's battery without fuss.

Key Features

• Size-specific dock: The charger is keyed to the Oura Ring 4 size, ensuring a secure fit for size 5 and avoiding loose connections during charging.
• USB-C to USB-C cable: The included cable uses USB-C on both ends so it pairs with modern power bricks and laptops for convenient charging anywhere.
• Fast charge times: Typical full charge completes in about 20-80 minutes depending on battery level, making it practical for quick top-ups.
• App battery tracking: Battery level can be checked in the Oura app by tapping the circular icon at the top-right of the home tab, so users know when to charge.
• Small, travel-ready size: Reviewers note the charger is compact and easy to slip into a travel bag or desk drawer for regular use away from home.

Who It's For

The charger is ideal for Oura Ring 4 owners who need an official, size-matched charging solution - especially those who keep a spare at the office or in a travel kit. Its compact form and USB-C cable make it convenient for people who move between homes, work, and trips and who value fast, predictable charge cycles.

It is not for users of other ring sizes or older Oura models, since the dock is size-specific. Buyers who want a multi-device charging station or a charger with multiple ports should look elsewhere; this unit is focused on a single purpose: charging an Oura Ring 4 size 5.

Pros & Cons

Pros

• Well-made, compact design that reviewers find easy to carry and store.
• Reliable charging speed, typically fully charging within an hour depending on level.
• Size-specific fit prevents loose connections and improves charging consistency.
• Included USB-C to USB-C cable works with modern power supplies and laptops.

Cons

• Price is considered a bit high by some customers for a single-purpose charger.
• Only works for the specified ring size, so buyers must verify the size stamped inside their ring.

Specifications

Product	Oura Ring 4 Charger (size 5)
Connector	USB-C to USB-C cable included
Intended supply	External 5Vdc supply complying with IEC 62368-1
Typical charge time	Approximately 20-80 minutes
Fit	Size-specific dock - check ring size inside the band
Use case	Spare or replacement charger for travel and daily charging

Our Verdict

The Oura Ring 4 Charger size 5 is a practical, well-built accessory for anyone who owns that ring size and needs a reliable way to recharge on the go. It is especially good value as a spare for travel or the office because of its compactness and predictable charge times, though buyers should be comfortable paying a premium for an official, size-specific dock.

Frequently Asked Questions

How long does the charger take to fully charge an Oura Ring 4?
The ring typically charges fully in about 20-80 minutes depending on the starting battery level.

How do I check the ring battery level?
Open the Oura app and tap the circular icon in the upper right-hand corner of the home tab to view battery status.

Will this charger work with other ring sizes?
No. Chargers are size-specific, so verify your Oura Ring 4 size stamped inside the ring before purchasing.