There are a few, yes. Here’s a search of some:
And ST sent out an email regarding this:
SmartThings has discovered an issue with Hub 2.0 firmware version 0.16.9 which can cause the backup AA batteries in some Hubs to deplete more rapidly than normal. We are sending a firmware update to your Hub on Monday, January 30th, which will fix this.
If the AA batteries in your Hub have been depleted, we will provide you with a new set of AA batteries. Please submit this form within the next 30 days to learn how to receive your new AA batteries.
When checking the AA batteries in your Hub, please be aware that sometimes, when depleted AA batteries are left in a device, a white, crusty powder may form. It’s likely that you’ve seen this in other devices around your home, like flashlights. If you find this, you should dispose of the AA batteries and remove any remaining powder from the Hub.
We apologize for any inconvenience this may have caused. Please don’t hesitate to contact us with questions.
Thanks,
The SmartThings Team