How To Fix Ember Mug Not Charging? – 5 Fixes!

I’m sure you will agree if I say- Cold Coffee Sucks! Thanks to Ember for inventing a smart mug that keeps your coffee hot at desired temperature even when traveling outdoors.

Ember Mug has 1120 mAh Li-Polymer rechargeable battery that keeps your beverage hot for 2.5 to 3 hours. But, sometimes, it faces charging problems on the charging coaster. I also faced this problem two days back. Fortunately, I found some easy fixes on Quora.

In this guide, we’ll discover why Ember smart coffee mug refuses to take charge and how we can fix that.

Ember Coffee Mug

Why Is My Ember Mug Not Charging?

Your Ember smart coffee mug will not charge if the charging coaster isn’t connected to a power source or properly plugged into the wall outlet. So, first, ensure that the charging coaster is securely inserted into a working wall outlet and the switch is turned on.

Other reasons like dirty or loose charging pins, loose screws or fittings, a faulty charger, or depleted battery life also cause the Ember mug to stop charging.

How To Fix Ember Mug That Is Not Charging?

I know it’s a bad morning start because your Ember mug isn’t charging. Don’t worry; I recently faced this issue and found some easy fixes.

Here’s what to do if your Ember travel coffee mug isn’t charging-

1. Insert The Charging Coaster To Another Wall Outlet

Ember Coffee Mug Charging Coaster (1)
Credit: HuntingWaterFalls

Before doing anything, ensure that your Ember charging coaster is securely plugged into a working wall outlet and the switch is turned on. Because I often forget to turn on the wall outlet switch after plugin the charger.

Also, a faulty wall outlet is another common reason your Ember coffee mug won’t charge. So, I recommend you try another wall outlet or insert another device to ensure the outlet is working.

2. Inspect Your Charging Coaster

Ember Coffee Mug Charging Coaster

I love the design of the Ember charging coaster because we don’t need to align every time. However, sometimes the charging pin gets stuck and won’t connect to the metal rings of the coffee mug.

Also, sometimes the adapter cable gets frayed, so the charging coaster doesn’t receive power. So, if the charging pins are pushed down, take them out by tapping on the back of the charging coaster. You need to replace the entire unit if that doesn’t come out.

See the price of the Ember charging coaster on Amazon

YouTube video
Video Tutorial

3. Clean The Metal Contacts

Ember Coffee Mug Bottom

If you accidentally spill a few drops of coffee or tea, it will stick to the metal contacts of the charging coaster and bottom rings. This creates an insulative layer on the metal contacts, preventing the current flow.

If your Ember mug isn’t charging, clean the metal contacts on the charging coaster with a microfiber cloth dipped into isopropyl alcohol. Also, clean the metal rings at the bottom of the Ember smart mug.

This will fix the current flow issue, and your Ember will start charging again. If this doesn’t help, follow the next solutions mentioned below.

4. Reset Your Ember Mug

Ember Coffee Mug Reset

If you’ve tried cleaning the metal contacts, but your Ember doesn’t charge yet, you may need to reset it. Resetting your Ember mug will restore everything to factory settings and fix all minor software glitches.

Here’s how to reset the Ember ceramic mug:

  • Empty the mug of any liquid.
  • Press and hold the power button (located at the bottom of the mug) until the LED flashes greenish-yellow.
  • Leave the button once the light flashes white.
  • Put it on the charging coaster to see whether it starts charging.
YouTube video
Video Tutorial

Here’s how to reset the Ember travel mug:

  • Press the reset hole (located at the bottom of the mug) with a paper clip until a HELLO message appears on the LED.
  • Now press and hold the reset hold with a paper clip for 10 seconds.
  • Remove the paper clip once the RESET message appears on the LED.
YouTube video

5. Contact Ember Support

If you’ve tried everything but the problem isn’t resolved, it’s time for professional help. You can contact Ember customer support to get the issue fixed.

You can claim a replacement for your defective unit if your product is under warranty. Find the customer support details on Ember’s official website.

How Do I Know My Ember Mug Is Charging?

Ember mugs have an LED indicator that informs the status of the mug. When you place your Ember mug on the charging coaster, the LED will turn Red, which indicates it’s charging. You can also check the charging status by pairing it with your smartphone.

How To Do Hard Reset On Ember Mug?

A hard reset will restore your Ember mug to its factory settings. This will fix any software bugs on your device. The process to hard reset an Ember coffee mug may vary from model to model.

Here’s the step-by-step guide for how to reset your Ember mug-

Ember Ceramic Mug:

  • Press and hold the power button (located at the bottom) until LED flashes greenish-yellow.
  • Release the button once LED turns white.

Ember Travel Mug:

  • Press the reset hole with a paper clip for 3 seconds.
  • Release the hole once the HELLO message appears on the LED screen.
  • Now, press and hold the reset hole with a paper clip for 10 seconds.
  • Release the hole once the RESET message appears on the LED screen.

That’s it! Your Ember smart coffee mug has been hard reset. Now you again pair it with your smartphone to set the temperature and change other settings.

Can You Replace Ember Mug Battery?

Ember smart coffee mugs have an 1120 mAh rechargeable Li-Polymer battery, which maintains the liquid temperature at 57°C for about 2.5 to 3 hours. Ember doesn’t offer a battery replacement service, but you can replace it yourself.

Here’s a video tutorial on how to replace the Ember mug battery at home-

YouTube video

Click here to find Ember Mug Battery Replacement on AliExpress

How Long Does Ember Charging Take?

The Ember coffee mug has 1120 mAh battery that takes approximately 2 hours to fully charged. Once you fully charge the battery, it will keep your beverage hot for 2 to 3 hours.


Generally, an Ember coffee mug won’t charge due to a faulty charging coaster. Ensure the power cord is securely plugged into a working wall outlet and the charging cable isn’t frayed. Also, clean the metal contacts on the charging coaster and coffee mug base to fix the charging issue.

If the charging coaster is working perfectly, then try a hard reset. This will fix all software glitches and restore your mugs to factory settings. If nothing helps, contact Ember customer support.

Enjoy your hot coffee!

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  1. Got new charging tray because one of little prongs was depressed. New one worked for about a week….now this charging tray is doing same of prongs not springing back. Am I doing something wrong?

  2. Irwin Solomon says:

    I keep the 14 oz mug on the charger while I am using it. It still discharges, and now it will not connect to bluetooth. I have tried soft and hard resets to no avail.

  3. Thanks for these troubleshooting tips! Saved me from buying a new cup because the pins on the base won’t stay in contact any longer. Probably not a bad investment just replacing the base every 3 years. Use it every single day just about

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