Cold temperatures won’t permanently damage the battery. Keeping the player at high temperatures for long periods of time will permanently damage the battery. In cold weather it is best to keep the player below your coat close to your body. If the player gets too cold, the battery might not put out enough power for the player to play, and the player might not play again until it warms up. It won’t permanently damage the player though. I guess operating a hard drive based player in very cold temperatures might damage it. Not so for flash memory based players.
PS. I noticed one website that says that lion batteries should not be frozen. They freeze at around -40 C, which is also coincidentally -40 F.
Message Edited by JK98 on 12-20-2008 12:10 PM
