This depends on the type of batteries your It is equipped with.  If you have flooded batteries (standard) you will be required to check the battery's water levels regularly and top up with DISTILLED water when required. If you have upgraded to the Gel style batteries you should not have to do anything as these are "no maintenance" batteries.

Both battery types should not be left off charge for extended periods as this can damage the batteries and shorten their life.

"Opportunity Charging" is encouraged. Unlike cell phone batteries of olde the batteries in your It do not have a memory and will take upto a full charge level regardless of the current state of charge