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HomeAircraftHelicopterHelicopter Main Discussion › 6S lipos IR
08-08-2012 07:33 AM  6 years agoPost 1
mr dan


Stockton Calif

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What do you guys feel is a good internal resistance for lipos reading taking while at nominal charged status and at full charge? Do the numbers change that much?

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08-08-2012 10:39 AM  6 years agoPost 2



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Depends heavily on several factors.

1. Size of pack, a 2500mah pack has twice compared to 5000mah
2. ambient temp, just a few degrees makes a huge difference.
3. Charger or tool used to measure.

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08-08-2012 12:46 PM  6 years agoPost 3
F1 Rocket

rrKey Veteran

Melbourne, Florida USA

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IR is best used as a trend indicator for your own packs as charged/checked on your own charger.

Danny - DemonAero Support Team

08-08-2012 01:01 PM  6 years agoPost 4
Steff Giguere


St-Eustache, Quebec, Canada

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+1 on what the guys said. I look at the IR every time I charge. Say a 6S battery is at 8 when it goes up dramatically and power seems to die then I stop using them.

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08-08-2012 02:26 PM  6 years agoPost 5


La Vista, NE.

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As a baseline comparison -

My GensAce 2650's have measured IR between 0 and 5 on each cell. they are new this last spring.

My Blade 130X batteries, brand new, have an IR of 49-55 per cell. mCPx have twice that.

08-08-2012 02:52 PM  6 years agoPost 6

rrElite Veteran

santa fe, NM, USA

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I've never seen the IR change on any of my packs regardless of charge, so it seems to be what it is from the get-go until it starts to age.

My Aligns (5200mah 40C 6S) generally sit around 3 mohms per cell, though I have one or two that are around 6 mohms per cell. They've been there ever since I bought them about a year ago and they haven't changed.

So generally I think that's where you want to see a 6S pack...


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