Crescendo Me – Fix Charging & Battery Issues – Avantree Support

Charging & Battery Help

Crescendo Me Headphones Not Charging?

Start with the charging checks below. If you need to replace the rechargeable batteries, the replacement steps are included further down.

What do you need help with?

Choose the option that best matches the problem.

Headphones Not Charging

Check the charging dock, USB-C charging, and charging indicator.

Start troubleshooting →

Replace the Batteries

See the original photos and step-by-step battery replacement instructions.

See replacement steps →

Need New Batteries?

Find compatible rechargeable replacement batteries for Crescendo Me.

View replacement batteries →

First, Make Sure the Headphones Are Charging Correctly

Crescendo Me can be charged on the powered dock or directly by USB-C.

Charging Method 1

Charge on the Dock

Use the transmitter and charging base to charge the headphones.

1 Make sure the charging base is connected to power.

2 Place the headphones correctly on the charging dock.

3 Check the headphone charging indicator.

Charging Method 2

Charge Directly by USB-C

You can also charge the headphones directly through their USB-C charging port.

1 Connect a USB-C charging cable to the headphones.

2 Connect the other end to a powered USB source.

3 Check the headphone charging indicator.

Solid Red The headphones are charging.

Light Turns Off Charging is complete. A full charge takes about 2.5 hours.

Still Not Charging?

Try these checks in order.

Make Sure the Charging Dock Has Power

The headphones only charge on the dock when the transmitter and charging base are powered.

Look for the solid red charging light on the headphones.

Reseat the Headphones on the Dock

Lift the headphones off the dock and place them back into the charging position.

A solid red light means charging has started.

Try Direct USB-C Charging

If the headphones do not show a red charging light on the dock, connect a USB-C cable directly to the headphones and try charging again.

A solid red light should appear while charging.

No Red Light with Either Charging Method?

If the headphones will not charge from either the powered dock or direct USB-C, contact Avantree support for further diagnosis.

Need to Replace the Batteries?

Crescendo Me uses two replaceable rechargeable batteries.

10440 3.7V 350mAh Lithium-ion 2 Batteries

How to Replace the Batteries Open this section for the 5-step replacement guide and original photos.

1 Open the Ear Cup Cover Start here

Press and hold the spot located just above the OPEN button. Gently lift the outer cover to reveal the battery compartment.

Crescendo Me ear cup showing where to press to open the battery cover

Press the area shown by the blue arrow while gently lifting the cover.

2 Remove the Old Battery Open the battery compartment

Remove the old rechargeable battery from the ear cup.

Crescendo Me open ear cup showing the rechargeable battery compartment

The rechargeable battery is located inside the ear cup.

3 Insert the New Battery Negative (−) end first

Insert the replacement battery with the negative (−) end first.

Negative (−) End First Insert the negative side of the replacement battery into the compartment first.

Crescendo Me battery installed inside the ear cup

Use the installed battery shown above as a reference for orientation.

4 Close the Ear Cup Cover Press until it clicks into place

Replace the outer cover and press gently until it clicks into place.

5 Repeat on the Other Side One battery is installed in each side

Follow the same process to replace the battery in the other ear cup.

Long-Term Storage

Remove the batteries if the headphones will be stored for an extended period.

Still Need Help?

Choose what you need next.

Need Replacement Batteries? Find compatible replacement rechargeable batteries for Crescendo Me. View replacement batteries → Still Not Charging? If neither the powered dock nor direct USB-C charging works, contact Avantree support for further assistance. Contact support →