I love this! Like most of us, I have a lot of battery-operated devices. And I do, sometimes, find a battery in a drawer and I do not know why it is there or how old it is.And with this tool, I can easily and instantly find out if it is brand new, slightly used, or almost dead.The screen is very easy to read. You select the battery type on the dial. Put one probe onto the positive, one on the negative end of the battery. Now the meter, going up in 5% jumps will tell you what percentage of the battery remains.It will also tell you the voltage and the internal resistance of the battery.The probes have spring-loaded tips with textured ends so they grip the battery you push them against.
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