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Old 06-07-2005, 02:53 AM   #1
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hi,
on the back of batteries there is the label with the specs. i have noticed with the IR some say 14-18 and others 2.0-2.7. What is the difference between them? is an IR of 14 as good as an IR of 2.0?

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Old 06-07-2005, 07:15 AM   #2
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the lower the internal ressistance the better!
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Old 06-07-2005, 12:30 PM   #3
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Both are correct. Some companies use a little different sofware. If the number is over 10, then you're looking for 13-15. 12 is really good. If the number is below 5, then you're lloking for something from 2.0 to 3.0. And yes, the lower the better.
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Old 06-08-2005, 01:47 AM   #4
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thanks for the replies guys. what do you mean by 'the number'? what would IR of 17 work out to? is that good?
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Old 06-08-2005, 08:49 AM   #5
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IR of 17 is way high. The highest I'd go for if the IR's are in the teens would be 15. Most of the packs you'll see from Fukuyama will be in the 13-14 range. I have some 12's. IR (Internal Resistance) relates to how quickly the cells can get power to the motor which translates to more punch.
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Old 06-08-2005, 08:59 AM   #6
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The way i understood it was some IR #'s are a pack total IR and the other is the cells individual IR.

A PACK of
14IR pack = 2.33IR per cell

So if you buy brand new packs that claim 2.2IR per cell when you cycle the pack as a pack on your T35++++ your gonna be looking for an IR of 13.2.
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Old 06-08-2005, 09:18 AM   #7
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That's true on the turbo 35 but when they match cells, they do it individually, not per pack. They cycle each cell in Turbo matchers ( I believe it's 4 or 5 cells per matcher, I can't remember for sure), print the labels for each cell, then match them up by voltage, runtime, and IR into 6 of 4 cell packs. Some matchers just use a little different software that gives a higher number for the reading like Fukuyama does.
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Old 06-08-2005, 10:09 AM   #8
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ya i understand its per cell.

Im wondering if someone from FUMAMA can tell us was software/matcher they use.

Actually there are 2 ways to get IR. Turbo matchers give you ACTUAL IR and another IR i cant recall what its called. One is alot higher then the other
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Old 06-08-2005, 10:28 AM   #9
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It's an average internal resistance if I'm not mistaken. You can Email Dan from Fukuyama. I'm sure he'd be happy to get you an answer. [email protected]
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