myk505

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?

thanks

gaz8

the lower the internal ressistance the better!

Jon Kerr

iTrader: (17)

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.

myk505

thanks for the replies guys. what do you mean by 'the number'? what would IR of 17 work out to? is that good?

Jon Kerr

iTrader: (17)

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.

Joel Lagace

iTrader: (4)

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.

Jon Kerr

iTrader: (17)

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.

Joel Lagace

iTrader: (4)

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

Jon Kerr

iTrader: (17)

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]