I have a CR1632 battery for the remote keyless entry into my car. In fact, I have two remotes. My wife has one and I have the other. Only one is working reliably and I don't want to pull that one apart just to take a voltage reading.
The battery is a "3V" battery. On my workbench it tests out at 2.93 volts (unloaded). I have no idea if that's a good voltage or not. And I would like to know a good way to test it for its capacity (or state of charge). I once had an 80 volt battery that was claimed to be dead by a college professor. It read 80 volts, so I thought it must still be useful. In fact, it was still useful. It was able to power a red LED WITHOUT USING A RESISTOR. 80 volts? Sure. SOC? Well, I learned it was a dead battery in deed. Capable of being used as a christmas light tester via the LED. So I have much to learn about batteries (apparently).
How can I test it properly?
Yes, I know they're cheap. But I NEED to know. If for no other reason, I just need to know for the sake of knowledge.
Thanks guys and girls (though I don't think I've seen any girls here yet - at least not that I'm aware of).
The battery is a "3V" battery. On my workbench it tests out at 2.93 volts (unloaded). I have no idea if that's a good voltage or not. And I would like to know a good way to test it for its capacity (or state of charge). I once had an 80 volt battery that was claimed to be dead by a college professor. It read 80 volts, so I thought it must still be useful. In fact, it was still useful. It was able to power a red LED WITHOUT USING A RESISTOR. 80 volts? Sure. SOC? Well, I learned it was a dead battery in deed. Capable of being used as a christmas light tester via the LED. So I have much to learn about batteries (apparently).
How can I test it properly?
Yes, I know they're cheap. But I NEED to know. If for no other reason, I just need to know for the sake of knowledge.
Thanks guys and girls (though I don't think I've seen any girls here yet - at least not that I'm aware of).