![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
![Amazon.com: Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, Copper : Home & Kitchen Amazon.com: Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, Copper : Home & Kitchen](https://m.media-amazon.com/images/I/71iWE8HvfsL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Ember Charging Coaster 2, Wireless Charging for Use with Ember Temperature Control Smart Mug, Copper : Home & Kitchen
![Ember Temperature Control Smart Mug 2, 296 ml, Copper, 90 min. Battery Life - App Controlled Heated Coffee Mug - New & Improved Design : Amazon.es: Hogar y cocina Ember Temperature Control Smart Mug 2, 296 ml, Copper, 90 min. Battery Life - App Controlled Heated Coffee Mug - New & Improved Design : Amazon.es: Hogar y cocina](https://m.media-amazon.com/images/I/61ksT3iDY4L.jpg)
Ember Temperature Control Smart Mug 2, 296 ml, Copper, 90 min. Battery Life - App Controlled Heated Coffee Mug - New & Improved Design : Amazon.es: Hogar y cocina
![Ember Smart Mug Charger Repairs - Maker, DIY - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key Ember Smart Mug Charger Repairs - Maker, DIY - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key](https://global.discourse-cdn.com/digikey/original/2X/b/bee8e899c9fdd0013daba8f307a7f1dda57f8154.jpeg)