Cordless phones typically need a battery or two for them to work. Somewhere in your house, you many have a collection of batteries. The batteries may be new, old or used. However, you may not know exactly how old they are or if they are still good to use. Find out the batteries’ life with a battery tester. A battery tester allows you to read the results of a good or bad battery before you decide to use it. Tips Warnings Writer Bio
