The battery symbol with the exclamation mark means your battery is no longer communicating with the device. Contact Amazon and depending on the age of the device they may replace it for you or if it is out of warranty you can try changing the battery out yourself.
Regarding this, how do I fix the exclamation mark on my Kindle?
Restarting your Kindle might help to resolve intermittent issues such as a frozen screen or slow performance.
- Press and hold the power button until either a power dialog box appears or the screen goes blank.
- Continue holding the power button for 40 seconds, then release.
In this manner, how do I reset my Kindle Paperwhite battery? Try resetting the Kindle by holding down the power button for at least 20 seconds. Turn it back on and see if it charges normally. If it still won’t take a charge, let it rest for about half an hour while connected to power, then try the reset again.