Beginners Guide to Processing 18650 Cells | Cell Database


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Capacity on the same pack
#1
Question 
What is the highest difference you would recommend between batteries on the same pack?
100mah? More? Less?

Of course I know it would be better that all the batteries are the same,  it since the are second hand we have to deal with what we have. 

Thank you
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#2
I'd say under 200mah of variance, and batteries with similar internal resistance would be the best.
Korishan likes this post
It's better to over engineer something than to cheap out.
As I say: You pay once, you cry once.
                                 You pay multiple times, you are a doofus
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#3
All depends on pack size and application. For mine which are 36p I run no more than 500ma. For my 8p lawnmower pack it's 100mah. If I had 80p 1k would be fine
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#4
How do I understand witch internal resistance they have?
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#5
Wado you test it. For instance the Opus have such a test but then you need to beware of contact issue. In end of this video I quickly show how it can differ:




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