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› 3S 2200mah Internal resistance?
08-07-2012 01:45 PM  6 years agoPost 1
lawguy14

rrApprentice

Winchester, Va 22602

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Can anyone tell me what the acceptable levels for IR in a 3S 2200mah pack would be. Some of our packs are getting older, but still balance and charge just fine, but I want to keep an eye on the IR.

I am also trying to figure out if the hitec X4 charger has the capability to check the IR of the pack

Fly it like your stole it!!!!!

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08-07-2012 09:58 PM  6 years agoPost 2
Richardmid1

rrProfessor

Leeds, England

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IR varies alot depending on temperature and state of charge. Ide say with a 2200mah pack anything below 20mOhms per cell on average is ok.

60% of the time, it works every time!

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08-07-2012 10:30 PM  6 years agoPost 3
rexxigpilot

rrProfessor

Florida

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Depends on the C rating of the packs. I have some 40C 2250 Rhino packs that have IR of 4-5mOhm per cell at full charge. Even my 4 year old 20C 2200 Hextronix packs have IR of 9-10mOhm per cell.

If you are getting accurate IR readings of 20mOhm per cell, they are long past time to be retired.

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08-07-2012 10:43 PM  6 years agoPost 4
Richardmid1

rrProfessor

Leeds, England

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If they are still flyable then that is acceptable to me.

60% of the time, it works every time!

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08-08-2012 01:14 AM  6 years agoPost 5
lawguy14

rrApprentice

Winchester, Va 22602

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Great, thanks for the info. This IR stuff is all new to me

Fly it like your stole it!!!!!

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