How can you test your AA batteries ?

Discussion in 'Photography Equipment & Products' started by goodguy, Mar 10, 2016.

  1. goodguy

    goodguy Been spending a lot of time on here!

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    While doing a shoot I found my flash was no working right, thought its caput but I fount my freshly charged AA NIMH were completely drained.
    This is not the first time my batteries play tricks on me so I would like to go through my entire battery collection and find the bead ones but I am not sure how.

    Any good advice on how to do that ?


     
  2. astroNikon

    astroNikon 'ya all Bananas I tell 'ya Supporting Member

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    My battery charger tells me the amount of juice in the batteries.
    You may want to get a charger that gives that information.
     
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  3. Derrel

    Derrel Mr. Rain Cloud

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  4. Designer

    Designer Been spending a lot of time on here!

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    I have one from Radio Shack that will test multiple types of batteries. It has flexible leads, which is not exactly handy, but with some practice, it is no big deal to hold everything.

    I used to have the little rectangular thing with an "arm" that made the second contact, but it failed after about 20 years.
     
  5. Warhorse

    Warhorse No longer a newbie, moving up!

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  6. goodguy

    goodguy Been spending a lot of time on here!

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  7. Designer

    Designer Been spending a lot of time on here!

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    I see now what you want. I don't know of any tester for the life, but one of those battery chargers that "reconditions" batteries by cycling them should also show the remaining useful life.
     
  8. SCraig

    SCraig Been spending a lot of time on here!

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    The best way to "Test" a battery is to charge it fully, then discharge it through a load to a fixed voltage and see how long it takes. My charger will cycle the batteries in that manner and display the mAh when finished.

    You can use something as simple as a flashlight bulb for the load and your multimeter to monitor the voltage. Discharge it down to about 1 volt and see how long it takes. It won't tell you the mAh (since the voltage is always dropping so is the current) but it will give you an idea of which batteries are better than others.
     
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  9. goodguy

    goodguy Been spending a lot of time on here!

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    Thank you all for the very helpful and informative feedback.

    I spent a bigger part of the morning doing research and I have learned a lot of new stuff.
    One is that the chargers we are getting with out NIMH batteries is rubbish and actually shorten the battery life.
    I found to get the max out of my batteries I will need a good battery charger that will also show me the life of my battery (as few have mentioned here)

    So I found a La Crosse BC1000 which looks like is the charger I am looking for, will wait few days to get my paycheck and will order it online.
     
  10. robbins.photo

    robbins.photo Yup, It's The Zoo Guy Supporting Member

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    You won't be able to check "life" persee. For a AA battery when it is fully charged you should be getting a reading of 1.5v, but the only way to check the "life" of hte battery is to put it under load and see how long it can maintain 1.5v.
     
  11. goodguy

    goodguy Been spending a lot of time on here!

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    Yes, so I have learned so what I believe the battery charger does is it charges the battery then drains it and then charges again and then he gives me the diagnostics so I know how much life I still have in the battery
     
  12. table1349

    table1349 Been spending a lot of time on here!

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