Doing a Drop Test
Get the battery you suspect is dead. If you have have a device that harbors multiple batteries, it would be a good idea to test all of them. Keep in mind that this method only works for alkaline batteries, more specifically the AA and AAA models.
Hold the battery with the negative terminal (flat side) facing down. Preferably have it held one or two inches above a flat surface, such as a table.
Drop the battery. If it bounces and falls over, then you can assume that it is dead. Dead alkaline batteries have a gas inside that account for this bouncing. If your battery doesn't bounce, or even stands up, then it still has its juice!
Why A Dead Alkaline Battery Bounces!
Easy Way to Distinguish Between Good and Bad Batteries Reviewed by Justin Jamil on 15:14 Rating: