Ensemble - Headphones Not Charging – Avantree Support

Ensemble (HT5150) headphones not charging? If the charging light turns off too soon, charging only works when you adjust the headphones, or the battery drains quickly, follow these checks in order.

START HERE — Understand the Charging Light

Solid Red

Headphones are charging.

Light Off

Charging may be complete or may not have started.

Important: The charging light normally turns OFF when fully charged, not green. A full charge takes approximately 2 hours.

Reseat the Headphones on the Dock

Remove the headphones from the charging dock.
Locate the metal charging contacts on the headphones and charging pins on the dock.
Place the headphones back slowly, aligning the charging contacts.
Adjust slightly until the solid red charging light appears.

Red light stays on?

Leave the headphones charging. If the light only appears when you press or move the headphones, continue to Step 2.

Clean the Charging Contacts

Remove the headphones and disconnect the dock from power.
Gently wipe the metal contacts and charging pins using a clean, dry, soft cloth.
Check for dirt, damage, or misaligned pins.
Reconnect the dock, reseat the headphones, and check whether the red light stays on.

Only charges when pressed into place?

The dock's charging contacts may not be making a reliable connection. Do not force the headphones against the pins. Continue to Step 3.

Check the Dock's Power Supply

Connect the dock to a 5V, 1–2.4A USB wall charger.
Make sure the USB-C cable is securely connected.
Try another compatible cable, wall charger, or power outlet.
Place the headphones on the dock and check for the red charging light.

Tip: Use a wall charger instead of a TV USB port, computer USB port, or power bank for this test.

Try Charging the Headphones Directly

This helps determine whether the issue is with the dock or the headphones.

Remove the headphones from the dock.
Connect a USB-C cable directly to the headphones' charging port.
Connect the cable to a USB wall charger.
Check for the solid red light on the left earcup.
If charging starts, charge for approximately 2 hours, then test the battery.

What Does the Result Mean?

USB-C works, but dock charging fails: Check the dock's power supply, charging pins, and headphone alignment.

Neither charging method works: Try another compatible USB-C cable and wall charger. If there is still no charging light, contact Avantree Support .

Red Light Turns Off Too Soon?

The red light turning off does not always mean the battery is fully charged.

If the red light turns off within about 30 seconds, use the headphones for approximately 1 hour.
Place them back on the dock and check whether the red light stays on.
If they report low battery or shut off quickly, try direct USB-C charging from Step 4.
Test whether the headphones can hold a charge after charging.

Still reports low battery?

If the headphones cannot hold a charge after direct USB-C charging, the battery or internal charging circuit may require inspection.

Replacement Headphones Won't Charge?

Confirm the replacement headphones are intended for Ensemble HT5150.
Compare the headphone charging contacts with the pins on your existing dock.
Do not force the headphones onto the dock if the contacts do not align.
Test direct USB-C charging to confirm whether the headphones can accept a charge.

USB-C works but dock charging doesn't?

Contact support with the model and production batch numbers of both products so compatibility can be checked.

Important Charging Safety Reminder

If you notice unusual heat, a burning smell, smoke, melting, or damaged charging components, stop using and charging the product immediately. Disconnect it from power if safe to do so, and do not attempt further troubleshooting. Contact Avantree Support for assistance.

Still Need Help?

Include your Ensemble HT5150 batch number, charging light behavior, whether direct USB-C charging works, and a photo or short video of the issue.

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