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Old 09-23-2004, 08:13 PM   #391
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Quote:
Originally posted by Tres
Check IR on the Sanyo 3300's....

The ones I had went sky high....
Its around 60 IR. and sometimes 70 IR. weird huh!?

the GP300 stay around 45 IR - 40 IR
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Old 09-24-2004, 01:18 AM   #392
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Quote:
Originally posted by KREATOR1
Its around 60 IR. and sometimes 70 IR. weird huh!?

the GP300 stay around 45 IR - 40 IR
Weird? Maybe, but I think there's a reason for most people using GP cells The GP's simply is better.
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Old 09-24-2004, 02:46 AM   #393
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Quote:
Originally posted by Cole Trickle
Weird? Maybe, but I think there's a reason for most people using GP cells The GP's simply is better.
simply agree with you...
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Old 11-22-2004, 08:57 AM   #394
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recently i've started to use more expensive matched packs, and out of care for them i was monitoring them over the charge:

Due to the stupid 4 second interval at the end of each minute, the charger actually misses the peak by 3 minutes.

I see that the pack has already peaked
some minutes and starts to -ve delta, but right b4 it reaches -20mV, something like -10mV...bam its the end of the minute. If the current is kept linear and not stopped for 3 seconds, it would surely have reached more than -25mV, which is the recommended threshold.

This thing happens for at least 3-4 more minutes, taking your cells another 200mAh more than it should.

The first time 1 particular pack started to -ve delta i noted the capacity was 3900mah, and temp was 52C..all nice and cosy, but the charge ended at 4200mah, 70C in a 4 more minutes b4 it actually cuts off.


I'm starting to think this is not such a good pre built function.

Last edited by lee82gx; 11-22-2004 at 09:11 AM.
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Old 11-22-2004, 09:42 AM   #395
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You can try to make the cutoff earlier then if you feel the charger is over working your cells. Haven't had much problems with charging them to a cuttoff of 3mv/cell
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Old 11-22-2004, 09:45 AM   #396
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I was using 3mV per cell.
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Old 01-24-2005, 01:04 AM   #397
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This charger is known to push the cells far.... Thus they will get quite warm/hot. It's good for punchy packs in stock class, but probably it'll shorten lifetime of the packs.

What you can do:

1) Set the delta peak as low as possible.
2) Lower the ambient temperature.
3) Lower the charge rate
4) Since these might not help enough, get used to it, or get another charger.

For comparision: I have 4 packs Fukuyama GP3300, and I'm having a hard time keeping the temperature below 60 degrees celsius. I'm charging at 6 amps, (5 dont help much, if any), 3 mV cut off pr. cell and at ambient temperature approx. 17-18 celsius degrees.

Funny thing is, that one pack might come off at 52-55, the next is at 60, then 55, then 62... Nothing changed inbetween.
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Old 01-24-2005, 02:11 AM   #398
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I agree, I have even gotten 70 degrees before on my pack. But it gives me results I can live with and last about a year. You can heat sink ur batteries, but I find that makes them peak earlier too, so you dont'get as much into your battery... which maybe a good thing for some who are worried the cdc is over doing it.

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Old 01-24-2005, 06:40 AM   #399
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Any of you use the trinity battery cooler?? This is a little configuration that will hold 2 batteries with a fan underneath.. It helps keep them cool while charging.. I think it gives the batteries a better charge to keep them a bit cooler.. I did notice prior to getting the BC that my packs would get a bit warm.. Not they are nice and warm but not hot... What your guys oppinion on using a BC while charging....
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Old 01-24-2005, 06:56 AM   #400
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Quote:
Originally posted by Babylou
Any of you use the trinity battery cooler?? This is a little configuration that will hold 2 batteries with a fan underneath.. It helps keep them cool while charging.. I think it gives the batteries a better charge to keep them a bit cooler.. I did notice prior to getting the BC that my packs would get a bit warm.. Not they are nice and warm but not hot... What your guys oppinion on using a BC while charging....
cooling your batt's are not recommended by anyone except the maker of the cooler.
What it does is to cool the cell, making it take more and more charge and just converting the current to heat, which is then transfered to the cooler.
It's better to just let the cell heat up a little at the end, but with it taking just the right amount of charge. No more no less.
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Old 01-24-2005, 02:41 PM   #401
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I agree with ya lee.
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Old 01-24-2005, 05:42 PM   #402
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The Battery cooler is great for two things,
1) When you are discharging
2) To cool your car down after a heat.
I would not use it while charging.
my $0.02
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Old 01-25-2005, 06:45 AM   #403
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ok so the temp is normal.......sorted

but now my packs are loosing there punch towards the end of the race.........3300 with a stock motorwhat am /arent i doing??????
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Old 01-25-2005, 06:58 AM   #404
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can you list the process that you use to discharge.. plus list your charge settings and the amount the batteies are taking...

I think I charge mine at 5.5V and 0.5mv. Most charge theirs at 6 and 0.3mv delta peak.

What I have found the best so far is I use an octane 2 Integy discharger and leave it on there for atleast 1 day.. Min is 2 hours... I do this afew days prior to race day.. Then on race day I charge up the batteries prior to the race.. I race three cars so sometimes I have to borrow an extra charger... Right before the race, I again recharge the battery pack using the boost feature on the 16X5v6 charger...

I have plenty of boost the entire race... I race 2 battery packs for each car. We run 2 heats and 1 main. Whichever battery I use in heat 1 I use in the main. I do not discahrge this battery. I just recharge and boost prior to the main. So far this has worked well for me this year.. I use promatch 3300 1.17+ packs... Some are new this year. Some are leftover from last year. All are performing great.....
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Old 01-25-2005, 07:20 AM   #405
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Quote:
Originally posted by pink pac man
ok so the temp is normal.......sorted

but now my packs are loosing there punch towards the end of the race.........3300 with a stock motorwhat am /arent i doing??????
How old are the packs? How many runs? Can you lower the peak temp?
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