These are all good tips. I am unsure about the battery storage though. In my mechanical aerospace courses, we spent a great amount of time talking about the NASA space shuttle and a lot of the problems they deal with is heating/cooling when up there next to the big bad sun. Batteries were the most sensitive. They could not get too hot and they could not get cold either. We actually have to spend more on launching our rocket just so we can keep those batteries warm at the 70 degree temperature they like to operate at. Somehow I don't think storing them in colder temps is good for them if using them in cold is bad. But I could be wrong?