Using A Battery Tester Vs Multimeter To Test Batteries




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D700Replacement: How would one test the relative condition of a lithium rechargeable battery?  If I have several identical camera batteries how would I go about choosing which ones to keep?  And what criteria would I use to rate them?  ie. number of charges left, max charge each will take, performance under a load ?

Carlo Tanne: I need to test some Energizer Lithium 9x batteries. What tester would you use?
 

mnash3: Cool.... Thanks for sharing.... I will look to see if Radio Shack has what I need....

Kev Mcgee:
OK

Hafnium Halflife: but I have already bought a multimeter to test my battery (after doing some research on some well known forum)! Wish I have watch your video before I made the decision to buy.

kimchee94112: Look up "multimeter schematic" and "How does a multimeter work?" on Google. Look up voltage and current measurements on Google as well.

kimchee94112: Look up Battery Fuel Gauge and State of Charge (SOC). Need a different tester for car batteries.

dial2fast: I see what you are trying to say. The multimeter will give you a decimal reading of the voltage in DC or AC. Multimeter is mostly used for checking voltage readings, such as whether a circuit has 12v or 5v or 3v or 0.7v. The battery tester does not need to have that kind of resolution on it's reading. It simply just tell you it's good or bad. As to your statement, you can think of it as the reading translated to a percentage of the capacity of the battery.

Ben Cobb: Thank you very much for this; I've been meaning to buy one (or both) of the devices demonstrated in this video, yet I didn't have an idea of what the "Different readings" mean. Just to be clear that I understand correctly; It's as if the Multimeter measures the voltage as a DECIMAL (I.E. 1.5 out of a maximum value of 2), Whereas the Battery tester will give a reading of the voltage as a PERCENTAGE (I.E. The meter will swing to 75% over a "dead" reading) Is that right ? Or did I over-think it ?

akr3985fan: The Image was a little Blurry for me if it could be sharped up a bit that would be great Other wise Good Video

dial2fast: yes, the needle goes to the green section of the meter for full strength

daemonk9: can these only tell when a battery is nearly dead? Is there a way to tell when battery is nearly full?

Big Ed Mustafa: Good video. Thanks!

JD Hammers: Very helpful. Thank you

dial2fast: Yes, that CEN-TECH does have a battery mode, but I was trying demonstrate how easy and inexpensive it is to use a battery tester which gives you a simple red and green range. There is not only one way to test a battery but why not use a simple way.

KJH Bakker: i use a multimeter for all my batteries if its 1.2v or lower its empty around 1.35 - 1.49 its ok 1.5 or higher its great!

Antonio Caldera: Great info!

Alexander Rex Evensen: I found a multimeter which had built-in battery tester for 1.5 and 9 volts, so I guess that might work as both? =)

El Gwat: This is wrong. Voltmeters work by passing current flow through a known resistance. Basically a battery tester is a dumb voltmeter. So, they are both "under load." A battery's stated voltage is the nominal voltage determined by the chemistry of the battery. Once the voltage drops below the nominal voltage, the battery is nearly spent.
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Using a battery tester vs multimeter to test batteries