Ikechukwu Joseph: Hi, The best ideas that I have seen was on Volt daddy (i found it on google) Probably the most helpful info on batteries and this type of stuff that have found.
L.Leonidas: You didn't mention that the multimeter tester tests AC (alternating current) and the battery tester tests DC (direct current ).
Jeffrey Deutsch: While it doesn't have variable loads for different size cells, the little Harbor Harbor freight has a battery test function. It is one position on the dial and it says a good 1.5 volt battery should read 4ma and a good 9 volt battery should read 25ma. A quick calculation shows they are putting a 375 ohm load across the battery and using the ammeter function to see how much current flows. Since the HF meter has a load function, you should mention it. BTW, they give that meter away free fairly often with any purchase.
Edmund Wootton: Thank you for a very well explained video. I hadn't realized the difference between the battery testers and the multimeter. Very helpful, thanks. Ed
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 T: 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
Anna Berry: Can you also test re-chargable batteries in this way to see if they need re-charging?
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?
•• jdwindowcleaningservices••: 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.
Using a battery tester vs multimeter to test batteries5
out of 5
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