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› Lipo health based on charging charts?
04-06-2010 04:44 AM  8 years agoPost 1
jackheli

rrProfessor

Vancouver - Canada

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Is it possible to have an idea of how good or bad your batteries are by looking at charging graphs? Do you need a baseline to compare to?

I can plot Volt/Amp or total charge against charging time.

Thanks.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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04-06-2010 06:18 AM  8 years agoPost 2
Git

rrVeteran

Brunei

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i would love to know this as well..

im only using old school method of determining my lipos health.. apart from ridiculously short run times of cse.

if it doesnt put back in at least half of the capacity during a full charging.. that lipo is due for retirement into the salt water bucket..

Alees Rush 750

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04-07-2010 05:14 PM  8 years agoPost 3
jackheli

rrProfessor

Vancouver - Canada

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ttt

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04-08-2010 01:43 AM  8 years agoPost 4
fenderstrat

rrProfessor

Aston,Pa

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another way to determine pack health is Internal Resistance of the cells.If you know what the IR is/was when the pack was new you can track this,as the IR increases the cell loses its ability to hold V under load.The lower the IR the better the packs perform
if it doesnt put back in at least half of the capacity during a full charging.. that lipo is due for retirement into the salt water bucket..
If I'm not mistaken the industry standard it MUCH higher than that,let me see if I can find some relevant info

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04-08-2010 04:00 AM  8 years agoPost 5
jackheli

rrProfessor

Vancouver - Canada

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That is an excellent thought. How can I determine the internal resistance from the charging charts? any idea?

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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04-08-2010 04:06 AM  8 years agoPost 6
fenderstrat

rrProfessor

Aston,Pa

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you need a way to measure it from the battery or in my case my charger tells me the IR numbers when i charge

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