How to Test Common Household Batteries With A Multimeter
Тәжірибелік нұсқаулар және стиль
In this video I show you how to test common household batteries using a digital multimeter.
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Good introduction video using a DMM. You might demonstrate what happens if the test leads are reversed. You might also address possible bad readings (e.g., resistance) and hazards (e.g., reading higher voltages) if the lead probe tips are touched with fingers during testing.
Thanks for sharing 👍
Two notes: 1) You really should test with an inline load (such as a small resistor). Without a load it is possible to measure a good voltage in an actually dead battery. 2) While it is ideal to put the positive and negative on the correct ends, getting it wrong will only change the sign of the output. So for example -3V instead of 3V. As long as you understand that it doesn't really matter which way you measure.
Informative, useful👏🌟👍
Thanks. I had mine on the wrong setting!
Helpful. Didn’t realize bad batteries still had so much power still there
@arthendrickson4860
10 ай бұрын
Oh, yes. The low voltage AA (1.19 VDC) might still power some devices (e.g., a flashlight with an incandescent bulb). Most electronic devices will not function correctly.
@Gritachi233
10 ай бұрын
Yes that's why it is also important to recycle them properly.
Is the volt reading independent from charge? On the rechargeable drill ones for example, will it show the same volt reading regardless if its charged all the way or not?
These batteries weren't tested with a load on them, so they really may not be as good as you truly need them... 😯🤔😬
When battery is in good condition,, why it shows more than its voltage. For an example, 9V battery shows 9.64V.
Same meter but my brand new AAA reads 235. Not 2.35. Two hundred thirty-five. No decimal places on the DCV20 setting just like yours. All my batteries are like this.
@ZombieX13
4 ай бұрын
Solved: Bad battery powering the multimeter.
To make it more clear, it would've been helpful to show what the proper voltage for each battery should be by pointing it out where it's written on the battery. "This battery is rated at 1.5 volts (point to it on battery), and when we check it, it reads... (etc.)"