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Battery Discharge Test

    #1
  1. Join Date
    Jun 2018
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    Battery Discharge Test

    Hi guys,
    I need your help about battery discharge tests. We completed the test but i have some question marks in my head. Batteries are for 30 min but test was completed at 55 minutes. When i calculate the capacity it is more than 100 percent. Do you think that is make sense?

  2. #2
  3. Join Date
    Nov 2021
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    LA Battery?

    Quote Originally Posted by changeabilities View Post
    Hi guys,
    I need your help about battery discharge tests. We completed the test but i have some question marks in my head. Batteries are for 30 min but test was completed at 55 minutes. When i calculate the capacity it is more than 100 percent. Do you think that is make sense?
    The slower a battery is discharged the less losses. Look at the performance table in the sbs link below.

    https://www.sbsbattery.com/PDFs/Stat...CatalogWeb.pdf

    55 min is strange though. That would be fast. Typical is about 8 hrs dishcharge rate to hit the nominal A*hr.

    What kind of batteries?

  4. #3
  5. Join Date
    Jan 2015
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    Battery Capacity Test

    Quote Originally Posted by changeabilities View Post
    Hi guys,
    I need your help about battery discharge tests. We completed the test but i have some question marks in my head. Batteries are for 30 min but test was completed at 55 minutes. When i calculate the capacity it is more than 100 percent. Do you think that is make sense?
    Hi there,
    If you follow all procedures for your discharge test, among them, pre-equalization, resting time after this equalization, constant current during all test, correction factor applied (if necessary) that is your result, and you have a battery with some extra capacity. In short, done correctly it make sense.

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