So far, I personally do not have any reports of issues other than when plugged in and overcharged. That does not mean they do not exist though. The manufacturer currently believes the battery is defective but is seeking 3rd party verification, so I would proceed with immense caution if you choose to use the device in that manner. Basically, no one is sure right now.
Both of these scenarios would seem to reduce the risk we are seeing, but cannot confirm yet.
It is NOT recommended by us. People are doing it yes, but we don’t feel as though we have enough information to recommend that yet. Yes, we believe the battery is defective and more dangerous than a normal battery. We have people suggesting that users unplug the device and draw down the battery so it has no charge when removing or storing the device or battery. We are not experts and cannot confirm this is true. No one thus far has suggested otherwise.
We hope this is a weeks, not months issue. It will obviously be easier for us to support and solve the issue for U.S. based customers or people who still have access to their devices. As many people deploy this device as part of a community service project, safari, vacation, it’s not clear yet how we plan to reach everyone.