I'll be putting my wife's CLK away for the winter soon and am faced with a location with no electricity to trickle charge the battery.

Knowing the pile of resets I'll have to do after, can I just disconnect the negative and leave it?
Or should I remove the battery and keep it trickle charged at home?

Also, if I remove it, how to do it to ensure no nasty surges when it gets reinstalled?

Which order to remove leads when uninstalling, then which order when reinstalling ?