Muse Battery Troubleshooting

Just received your Muse? Charge it for 3 hours to ensure your best start!

This article covers everything about charging your Muse* and troubleshooting when your Muse battery doesn't last the full duration.

Charging My Muse
Muse LED Guide
Charging Time and Duration
Muse Battery Troubleshooting
 

*If you have an Original Muse 2014, see our Muse 2014 Troubleshooting article for applicable steps.

If your Muse won't turn on at all, reach out to Customer Care for support.

 

Charging My Muse

All Muse headbands must be charged using a micro-USB or USB-C cable and a USB wall charger delivering a maximum 5v (5 volts).

• Chargers capable of delivering more than 5v (5 volts) are not suitable for charging Muse hardware.

• The Muse charging cable is a standard micro-USB cable, or standard USB-C cable.

• Connecting your Muse to a desktop or laptop won’t provide a reliable charge.
   

You can see the Muse charge level in the Muse app when it’s connected by Bluetooth. You can also check your Muse battery life when it’s plugged in, or anytime, by tapping the power button once. The number of LED lights will indicate the battery level.

 

Muse LED Guide

Muse headbands are equipped with convenient LED lights to indicate the general charge level. You can also check Muse charge level in-app in the top left corner of the Train or Sleep tab by connecting your Muse in the app by Bluetooth.
 

Muse S Athena*	Muse S (Gen 2 / Gen 1)	Muse 2
LEDs while Muse is plugged into a USB wall outlet for charging.
Full solid green: 100% Green: 80% or more Yellow: 40-80% Red: less than 40% Athena's LED colours change gradually. Example: red to orange to yellow.	3 LEDs solid: 90-100% 3 LEDs: 50-90% 2 LEDs: 10-50% 1 LED: 0-10%	5 LEDs solid: 90-100% 5 LEDs: 70-90% 4 LEDs: 50-70% 3 LEDs: 30-50% 2 LEDs: 10-30% 1 LED: 0-10%
While plugged in, the pulsing light indicates Muse is charging. While unplugged, cascading lights mean it's ready to connect in the app by Bluetooth.

 

Charging Time and Duration

This table shows the typical time it takes to fully charge different Muse headbands, along with the overall charge duration.
 

	Muse S Athena*	Muse S Gen 2	Muse S Gen 1	Muse 2
Charge time	3 hours	3 hours	6 hours	3 hours
Charge duration	3 hours (Train tab session) or, 10 hours (Sleep tab session)	10 hours	10 hours	Up to 5 hours

*Muse S Athena: uses fNIRS sensors that consume more power than previous EEG-only Muse models. As referenced above, Muse S Athena sessions under the Train tab will consume the battery charge faster.

To complete an overnight sleep session with Muse S Athena:

1. Ensure your Muse S Athena receives a full charging time of 3 hours.

2. Connect your Athena in the Muse app by Bluetooth.

3. Tap the Sleep tab, and select one of the sleep experiences.
   
    

Muse Battery Troubleshooting

If your Muse is not lasting for a full charge as indicated here, try the following troubleshooting steps:

1. Check for a firmware update

2. Alternate charging methods

3. Hard reset your Muse

4. Refresh the battery
   
    

Check for a Firmware Update

Ensure you're using the latest battery optimizations by checking for a firmware update:

1. Open the Muse app and connect your Muse by Bluetooth.

2. Go to the Me tab and tap the settings icon in the top right corner.

3. From the settings screen, scroll down and tap Check for Firmware Update.

4. Tap Check for Headband Update.

5. Tap Update Now (if available).

Once your firmware is updated try giving Muse a full charge as described here, and see if your battery is lasting the expected duration.

If your Muse firmware is already up to date, continue below.

Alternate charging methods

Now that you know you're on the latest firmware, try charging your Muse for 4 hours using a different:

• Micro-USB or USB-C cable (depending on your Muse)

• USB wall charger

• Outlet
   

If your Muse still doesn’t hold a full charge, attempt a hard reset.
 

Hard reset your Muse

1. Connect your Muse to the USB wall charger.

2. Press and hold the power button.

   • For Muse S models or Muse 2, hold the power button for 10 seconds.

   • For Original Muse, hold the power button for 30 seconds.

3. Disconnect your Muse from the USB wall charger and turn your Muse on.
    

If your Muse still doesn’t hold a full charge after the hard reset, attempt to drain and refresh the battery.
 

Refresh the battery

1. Start any Biofeedback Muse session.

2. Allow the session to continue until the Muse battery depletes and shuts off. (You don’t need to wear your Muse or save the session afterward.)

3. Once depleted, charge your Muse for 6 hours.
    

Your Muse should now last the full duration as shown in the charge duration guide.