profdant139 wrote:
Cold weather: What does one do about charging a lithium battery when camping in sub-freezing weather? We really like snow camping -- is that a deal killer? We are almost never subjected to temps below ten degrees. And the daytime usually warms up to around 30 or so.
Lithium batteries should
not be charged when temps drop below freezing. Doing so could damage the battery.
At the very least, buy lithium batteries that have a built-in BMS (Battery Management System) that also have low temp sensors which will turn the batteries off when they get too cold. Getting batteries with internal heaters is also a possibility.
If you like snow camping, then make sure you at least have lithium batteries with low-temp sensors. Relying on "warm" battery compartments is foolish.
However, be advised that many (most?) inexpensive lithium batteries do NOT have low temp sensors or heaters. Make sure before you buy.
