I just did a search in the archives for a Winter Storage post in the beginners section and didn't find one in over 7 pages of searching. As this season is sadly winding down and clubs are having their official closing days, it's time to start getting things ready for the off season - at least some of the stuff not being regularly used. So what are some of the measures you take to 'winterize' your gear? How do you store:

-batteries
-engines
-planes (do things get removed?)
-field equipment
-anything else that needs something to preserve it during shelf life.

Thanks for all your help, it's (been) a great season!