Appendix  ·  151KINDLE USER’S GUIDE 5
th
 EDITION
BATTERY SAFETY
The rechargeable battery in your Kindle should be replaced only by an authorized 
service provider.  For more information about batteries, go to: 
http://www.amazon.com/kindleterms
HEADPHONE SAFETY
Listening to audio at high volume for extended periods of time can cause hearing 
damage. To avoid this problem, consider the tips below:
1.  Keep the volume down; 
2.  Avoid prolonged, continuous listening; and 
3.  Wear headphones that isolate the wanted audio from background noise. 
WIRELESS SAFETY AND COMPLIANCE
Turn Amazon Whispernet off in areas where wireless use is forbidden or when it may 
cause interference or danger. Some specific situations are described below. In general, 
you should not use your Kindle with Whispernet turned on any place you are not 
allowed to use a cellular device.
TURN OFF WIRELESS WHEN FLYING
To prevent possible interference with aircraft systems, the U.S. Federal Aviation 
Administration regulations require you to have permission from a crew member 
to use your device’s wireless service. If you have your wireless service turned off, 
you can use your Kindle for reading once a crew member has said it is okay to use 
electronic devices.
BE CAREFUL AROUND OTHER ELECTRONIC DEVICES
Kindle generates, uses, and can radiate radio frequency (RF) energy and, if not 
used in accordance with its instructions, may cause harmful interference to radio 
communications and electronic equipment. External RF signals may affect improperly 
installed or inadequately shielded electronic operating systems, entertainment 
systems and personal medical devices. While most modern electronic equipment  
is shielded from external RF signals, if in doubt, check with the manufacturer.  
For personal medical devices (such as pacemakers and hearing aids), consult with 
your physician or the manufacturer to determine if they are adequately shielded  
from external RF signals.