The cold discharged the bat?

So, I was flying and I left my S260 in the back and in cruise it got down to about -15C.

That night I fire up the lappy and yep. The battery went from 100% to complete discharge. This ever happened?

Today it was -31C in cruise...I brought it up to the cockpit.

James

 

Interesting, it's recommended to keep a battery in a cool-dry storage place, certainly not sub-freezing though.

Here's a link to a page with relevant facts

http://www.buchmann.ca/Chap15-page2.asp

"The recommended storage temperature of a lithium-based battery is 15°C (59°F) or less. A charge level of 40 percent allows for some self-discharge that naturally occurs; and 15°C is a practical and economical storage temperature that can be achieved without expensive climate control systems.

While most rechargeable batteries cannot be stored at freezing temperatures, some newer commercial Li-ion batteries can be kept at temperatures of -40°C without apparent side effects. Such temperature tolerances enable long and cost-effective storage in the arctic."

Obviously the chemistry is affected when the temp gets too low and discharge occurs, but according to this article it seems as if your Li-Ion battery should have kept some of its charge if these things are used in the Arctic -- but maybe they use a special kind of Li-Ion? I don't know the answer to that one.