Ember Mug² Coaster

I have an older Ember and have had to replace the charging coaster once in 2023. Ember support was super when I contacted them in 2023. I've now contacted support again (June 2025) with the same problem and they've been terrible. I've emailed 4 or 5 times, they've handed me off to several different people, all of whom have been pleasant, but none of whom have done more than say hello and tell me to submit information that I already submitted almost a month ago. The level of support I have received has been exceptionally poor, which is a complete change from 2023. This isn't rocket science. I know what's wrong, as I've had it before and I need a new charging coaster. I like my Ember, but would hesitate to buy another at this point, as the chargers seem to die regularly and there is now essentially no support.

I bought this mug for my 80 year old mom as a Christmas gift. Stopped working so she threw out the coaster. Still under warranty but had to FIGHT with company to get a replacement ONLY TO FIND OUT they are only sending her a replacement coaster WITH NO CHARGING CABLE!! You can't even purchase JUST the cable.

The pin design on this charger is the worst possible one. They always break, even when I'm extremely careful to avoid moisture on it. If it can't handle moisture, it shouldn't be called a coaster, since you can't use it while it's full. I have to leave the cup off of the charger while I'm using it, then charge in between uses. It would be way more useful if I could leave the cup on the coaster 24/7 without worrying about moisture. The pins always break and I don't know why they can't figure out a new sustainable design unless they see it as a way to keep getting mroe revenue from people having to replace their coasters all the time.

I, too, love my Ember. And, however, am experiencing the prong problem that so many others are experiencing with the charging coaster. Except that the vinegar fix has not worked for me. Unless someone can offer an alternate fix, I will be forced to buy a new one once the black is back in stock. Any help is appreciated.

Mugs are great, coaster is junk . it has little pins that fail. I have gone thru 3 you get cold coffee.

Steve is a rockstar! I did everything the support guidelines suggested.. uninstalled the app, reset.. etc, Nothing worked, I love my cup, and resigned myself to buy another coaster, when I decided to look at the reviews.. Within 5 mins I had a working ember again.. Thank you Steve

Love this ember mug when it works! The charging station buttons keep breaking! I’ve gotten TWO replacement chargers and they all fail after a few months!

I bought this approximately 5 months ago to replace my previous two charges that stopped working. Now this one is no longer working. I think there is an issue with these.chargers Ember needs to address

I love my Ember mug but they have got to fix the issue with the coasters. As many others have mentioned, over time one or both pins will get stuck in the recessed position and lose contact with the mug's charging ring. I'm going to try Steve's vinegar fix to see if that works as I've already bought replacement coasters twice.

One of my prongs won’t make contact with the not. Therefore it doesn’t charge.

Big thanks to Steve who wrote the "How to fix those coaster contact pins" article 3 mo ago! I had a recessed pin on my mug and tried his vinegar method (simply place a drop of vinegar on the recessed pin and let it sit for half an hour). It worked like a charm! And even better, after leaving the pin to soak in the vinegar, I didn't even need to pull the recessed pin into place. It just popped up on its own. My Ember Mug is back to charging as I write this. I highly recommend this hack if one or both pins have recessed. And if there's one thing I NEVER want to go without, it's my Ember. It is the one thing I can count on during my long workday to soothe my soul. Thanks to Ember for creating an excellent product and Steve for helping me stay soothed!

As everyone else is saying, the pins fail and you’re just out of luck.

My ember charging coaster lasted 2+ years before it stopped charging. No matter what I tried, it just stopped charging. I learned the problem was probably mineral buildup from water, I did the following, and it worked: I used tweezers to pull up on the charging pins. Only one would pull up, indicating major mineral buildup had it glued down. I then sprinkled 1/4 tsp. of baking soda into the base, then poured enough white vinegar on it to cover the inside of the base. I let it sit for about 10 minutes. After pouring off the vinegar solution, I wiped out the coaster with rubbing alcohol, then with a damp cloth. TA-DA! It worked.

on my 3rd charger as pin sticks - this is a FLAWED DESIGN FOR SURE !!!!

The second coaster has broken. I love the mug, but the repeated coaster failures make it hard to recommend this product. After barely a year of use, the pin failed to bounce back for charging. I use this mug five days a week for work, but the coaster isn’t waterproof or durable. This is my second failed coaster, and now I have to buy another one just to keep using my mug.

Chargers don't hold up. I've had three go bad, and they're stupid expensive. Hopefully my tumbler hasn't gone bad, too - to be determined...

I got the mug from my son on Christmas Day as gift however the charging coaster in not doing it’s job due to the contact pin on the coaster does not spring up for recharging

Very poor design, pins are not water proof, will corrode eventually or just break, requiring difficult soldering. No idea why they haven't updated this design yet.

I received my mug for a Christmas present and love it. I bought the sliding lid and an extra charging coaster. I wish there was a charger that I could plug into a USB outlet rather than electrical outlets. I have tons of USB options at work. Also, I would love it if the temperature maximum was 150 degrees. I understand if the maximum was determined for safety reasons. However, I like my beverages at 150-155 degrees.

My wife and I both have ember mugs. We have already replaced one charging coaster and now have to replace the second. We have only had the mugs one year.