![Amazon.com: Ember Temperature Control Travel Mug, 12 Ounce, 2-hr Battery Life, Black - App Controlled Heated Coffee Travel Mug : Home & Kitchen Amazon.com: Ember Temperature Control Travel Mug, 12 Ounce, 2-hr Battery Life, Black - App Controlled Heated Coffee Travel Mug : Home & Kitchen](https://m.media-amazon.com/images/I/71G-yhUrw5L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Ember Temperature Control Travel Mug, 12 Ounce, 2-hr Battery Life, Black - App Controlled Heated Coffee Travel Mug : 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://i.redd.it/rbiatyka5oh61.jpg)
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
![Ember Temperature Control Travel Mug, 12 Ounce, 2-hr Battery Life, Black - App Controlled Heated Coffee Travel Mug Ember Temperature Control Travel Mug, 12 Ounce, 2-hr Battery Life, Black - App Controlled Heated Coffee Travel Mug](https://m.media-amazon.com/images/I/61iSRR6xEyL.jpg)
Ember Temperature Control Travel Mug, 12 Ounce, 2-hr Battery Life, Black - App Controlled Heated Coffee Travel Mug
![Ember Temperature Control Smart Mug, 10 oz, 1-hr Battery Life, Black - App Controlled Heated Coffee Mug Ember Temperature Control Smart Mug, 10 oz, 1-hr Battery Life, Black - App Controlled Heated Coffee Mug](https://m.media-amazon.com/images/I/61RJNzkftjL.jpg)