In 2 Seconds, This Simple Trick Will Tell You If Your Batteries Are Dead Or Not

Ever have a battery die on your remote control, mouse, or calculator, but not know which battery is out? You could go to your closet and grab a tool to help you measure the capacity left in each battery, but that would be a lot of walking. If you're just looking to relax on the couch or at your computer, then you definitely don't want to get up and move around.