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Power & Energy
Forum Best way to determine 18650 capacity, resistance and condition ?
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Forum Thread Details
  • Replies 10 replies
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Related

Best way to determine 18650 capacity, resistance and condition ?

o.thornwall
o.thornwall over 4 years ago

I'd like to get idea on the best way or process to check the capacity, resistance and usable condition of used 18650 batteries ?

I plan on buying several hundreds of these batteries for an up coming project .

 

Thank you, Oscar.

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Top Replies

  • pctechnocrat
    pctechnocrat over 4 years ago +4
    I have done this for larger battery packs, but the same general method applies for measuring the internal resistance of the cell. Without buying special battery test hardware, you will need an electronic…
  • cookmesomekai
    cookmesomekai over 4 years ago +3
    Reliably determining the state of health of a lithium ion cell is pretty hard to do unless you have a reference cell. If time is not an issue and you have a source, a sink and a power meter available then…
  • jw0752
    jw0752 over 4 years ago in reply to o.thornwall +2
    The problem is defining exactly the point of total discharge, When I test them I fully charge them and then time how long it takes for them to discharge at a specified current to a lower voltage point…
Parents
  • dougw
    dougw over 4 years ago

    There is a road test of a battery tester right now.

    Hioki BT3554 Battery Tester 

    You should try hard to win this Hioki tester....

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Reply
  • dougw
    dougw over 4 years ago

    There is a road test of a battery tester right now.

    Hioki BT3554 Battery Tester 

    You should try hard to win this Hioki tester....

    • Cancel
    • Vote Up +2 Vote Down
    • Sign in to reply
    • Cancel
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