It's never too early to start thinking about inventory, and taking some time to prepare for it prior to its arrival can yield a more efficient, streamlined procedure.
Tasks commonly associated with inventory include weeding, repair, cleaning, and relocation.
Remove the belt clip and battery cover to check the battery clips and batteries for corrosion. If there is any corrosion on the battery clips, clean them with denatured alcohol using a cotton swab. If there is any corrosion on the batteries, replace them at once. Test your unit to make sure it is operating properly. Be sure to remove the alkaline batteries after the test.