Product Description battery tester battery tester for small batteries 9V battery 1.5V battery Make Your Life Easier Tons of batteries all over the house yet cannot find a good to replace Still have no idea which battery to keep and which to throw away Battery Tester solves your problems and make your life easier! Test batteries in seconds, tells you when its time to get a new . Battery Tester can be used to test the following. Quickly test battery level ---Compact size and lightweight design ---Self-powered,no need internal battery battery tester battery tester for small batteries 9V battery 1.5V battery battery tester battery tester for small batteries 9V battery 1.5V battery battery tester battery tester for small batteries 9V battery 1.5V battery Battery capacity criteria Red= Replace Yellow= Low Power Green= Good Identify battery status simply by the analog display needle.Instant readout makes it A MUST HAVE in your home! Features Size: 11 6 2.5 cm Require no battery for operation Good: 1.5V-1.28V| 9V-7.8V Low Power: 1.27V-1.15V| 7.7V-6V Replace: Below 1.15V| Below 6VNOTE : 1. You can simply test battery voltage to determine whether the capacity of the battery is low or high. It won't directly detect the battery capacity precisely 2. Don't forget: The Battery Tester is activated by the battery being checked. Keep test times as short as possible to avoid unnecessary battery drain.