SO is going to Peru, will be taking the digital camera and has been told that batteries don’t last as long up their (she’ll be at 8000ft above sea level).
Why’s this?
I don’t know why, but I have noticed that when it is really cold out (less than 20° F) my digital camera batteries will drain really fast.
Batteries work by a chemical process, when it is cold, such as at high altitudes this process is slowed down, thus less current is produced
Some pro-style film cameras have corded battery packs that can be kept close to your body under your clothes, thus keeping the batts warm and useful.
Any adapter like that for your dig?
I, too, think it’s a cold prob and not an altitude one. I’ve photographed at +2 miles in CO in the Spring and summer with no problems, but have had to warm up things down here at 1200’ during a cold snap.
We went through a lot with the tv remote control. The guy at the store finally asked us if we kept it in the sunshine & we said yes…odd, that heat does that too.
The battery doesnt really run out, but will deliver a lower voltage when the temperature or pressure falls, so it outputs charge more slowly.The voltage goes back up again when the temp/press do.See “Nernst equation”.