![Amazon.com: Ember Travel Mug Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Travel Mug, Black : Home & Kitchen Amazon.com: Ember Travel Mug Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Travel Mug, Black : Home & Kitchen](https://m.media-amazon.com/images/I/61z84bXKlqL.jpg)
Amazon.com: Ember Travel Mug Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Travel Mug, Black : Home & Kitchen
![Corrosion on charging rings? Is this normal? I wash and dry thoroughly after each use and return the mug to the charger, but I've noticed this happening and it's concerning me. I Corrosion on charging rings? Is this normal? I wash and dry thoroughly after each use and return the mug to the charger, but I've noticed this happening and it's concerning me. I](https://preview.redd.it/rbiatyka5oh61.jpg?width=640&crop=smart&auto=webp&s=f4b85164b14cc5f4b993b5736cc215f91645cab9)
Corrosion on charging rings? Is this normal? I wash and dry thoroughly after each use and return the mug to the charger, but I've noticed this happening and it's concerning me. I
![Amazon.com | Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, Stainless Steel: Coffee Cups & Mugs Amazon.com | Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, Stainless Steel: Coffee Cups & Mugs](https://m.media-amazon.com/images/I/81D6jHmnuAL._AC_UF894,1000_QL80_.jpg)
Amazon.com | Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, Stainless Steel: Coffee Cups & Mugs
![Amazon.com | Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, White: Coffee Cups & Mugs Amazon.com | Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, White: Coffee Cups & Mugs](https://m.media-amazon.com/images/I/51vhkiAF8jL.jpg)