My 1979 CJ-5 goes to a warehouse for the winter. I disconnect the battery, change the oil, fill the tank (less room for condensation) and add stabilizer, top off all fluids, check the tire pressure and bag it with a car cover. If mice are a problem in your area you might consider putting a bag of moth flakes inside the cab. In the spring I change the oil again and the filters.
Unless you are looking at long periods of sub-zero temps I wouldn't worry about pulling the battery. If it is in good condition and properly charged it will be fine. Do disconnect it, though. It eliminates the chance of fire and the chance that you've got some little ghost load there (stereo memory, etc.) that will slowly drain the battery.
Jack-Jack wrote: