Sennheiser Momentum 3 Not Charging: Causes & Fixes

Sennheiser makes one of the best headphones out there. They’ve got one of the best headphones that can handle the demands of a gamer – the Momentum 3. However, even with their high-quality device, there are still some subtle cases that give the company room for improvement – notably the charging and power issue of their earbuds.

If you’re reading this article, chances are you’re facing the same problem too – your Sennheiser Momentum 3 not charging. Not to worry, we will be giving you some troubleshooting guidelines on how to fix, it and of course, tell you its potential causes so it’s something you can avoid going forward. 

sennheiser momentum 3 not charging

Sennheiser Momentum 3 Not Charging: Possible Causes

There are several issues that could cause your Momentum 3 to stop charging, let’s explore them starting from the obvious causes you may be guessing.

1. Damaged Charger or Charging Cradle

As common with all rechargeable electronics, if the charging cable/plug stops working, then you’ll stop seeing the charging indicator when plugged in – the Momentum 3 works the same way as well.

While that’s the case, the charger can become damaged for various reasons — from common mishandling to something as serious as a power surge. It’s hard to really pinpoint when it happens, so the best case is to work towards getting your headphones to charge again is considering a charger replacement.

2. Faulty Battery

Sennheiser acknowledges that the amber light charging indicator may not come on if you’ve got a defective battery. This usually happens when they’ve exhausted the charge cycle (500), which usually happens after 2 years. In this case, users can consider a battery replacement.

3. Power Surge Causes Device to Go Out of Sync

A power surge, if powerful enough, can cause the components of your Momentum 3 to go out of sync, as such, the amber lighting won’t come on when you try plugging it the second time. Sennheiser acknowledges this as an issue on their headphones and recommends a reset or full charge cycle to get it back on track.

4. An issue with Power Supply

Sometimes, the socket you’re connecting to may be outright faulty, or the charging cradle may be defective. You’ll want to consider an alternative power source, or another charging cradle before making a conclusion.

Sennheiser Momentum 3 Not Charging: How to Fix

Following the four possible causes, there are some solutions you can consider before giving up and getting a new earbud. 

1. Change the Charger & Check the Charging Cradle

This is the first solution you want to consider especially if it worked properly just before a surprise power outage in the home. However, to avoid buying a new charger that you may not need, it’s best you check the power supply or change sockets or use a spare charger to make sure the problem isn’t coming from something else.

If you’ve always primarily used a charging cradle, you’ll want to check the contact points to make sure there’s no dirt blocking the way. Also, if your headphones don’t stay firm during charging, then you’d want to consider fixing the contact points first, before opting for a replacement.

2. Check the Battery & Replace it if Necessary

Usually if you can confirm you’ve got a working charger and charging cradle, your next solution would be found after examining the battery. The Sennheiser’s Momentum 3 battery has 500 charge cycles, typically exhausted after two years.

If this is the case with your Momentum 3, you may want to contact their support to get a battery replacement. This is often the solution when your device charges, but the amber light turns off too soon, while the battery also fails to last.

3. Do a Hard Reset

Sometimes your earbud may fail to charge because of a disturbance to its normal functions. The best solution here is to do a hard rest. Also, this can happen when your power source supplies a voltage that makes your device go out of sync. To hard reset your Sennheiser Momentum 3, follow the steps below.

  • First, you want to ensure the connection between your smartphone and the “MOMENTUM 3” is disconnected.
  • Then take one earbud out of the charging case, then touch and hold it for about 10 seconds. The LED on this earbud should alternately light up green and red.
  • Now place the earbud back into the charging case, and leave the lid of the charging case open when doing so.
  • After about 20 seconds, the earbuds should reset to the factory default settings and automatically reconnect to each other.
  • When the earbuds have been successfully reset and paired with each other, the LED of the charging case should light up red and green 3 times.

In most cases, especially if there’s no hardware failure of your device, a hard reset is all you need to get it to start working. It’s recommended you try it out first, before considering any replacement.


  • Lawrence Munson

    I'm Lawrence Munson, a tech blogger and audio enthusiast. is where I share my thoughts and findings on the latest audio gear such as earphones, soundbars, subwoofers, equalizers, etc. I love to test new products to help my readers understand and enjoy their devices better, and I'm always eager to share my knowledge about audio technology and how it works.