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Old 12-09-2004, 10:05 AM   #46
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Quote:
Originally posted by lee82gx
Ok I put 1 cycle through my 'other' charger:
18mV peak cut-off:
Charge : 3554mAh, voltage peak cut-off
Peak temp : 46.7C
Dis @10: 3081mAh

Compared to CDC,18mV cutoff:
Charge : 3880mAh, voltage peak cut-off
Peak Temp: 68C
Dis @10:3104mAh

Discharger is the same, only the charger is different. Pack is the same but the charge with CDC was done some time ago.
They were both trayed with the same equipment, and rested at least 6hrs before charge. After cooling to 40C it was then discharged.
Lee.
Just tell everyone here.
The 'other' charger is your brand new Team Much More Cell Master.
Just admit. You love this charger.
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Old 12-09-2004, 01:17 PM   #47
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Quote:
Originally posted by Mr. Shookie
we all know that is a very important number....
Not for stock racing, we only care about high voltage and low IR

Quote:
If your "other" charger is taking less time to discharge than the CDC than you have a real point.
As lee82gx stated, he's using the same discharger. Thus it's comparable.

mAH and runtime is related numbers; The "H" means hours, that is time. But this is only interesting if the discharge rate is constant, otherwise it's impossible to compare...

Okay, but I'm curious too, and would like to know what the average voltage was...
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Old 12-09-2004, 05:44 PM   #48
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yes I am comparing it with the Cell Master.
In my opinion it charges much better than the CDC but well that's quite irrelevant.

As regards to charge times, i think it takes 45-47mins on the CDC because of the extra intervals each minute.

As for the Cell Master, just take the charge and divide by the current.oops i forgot to mention both were done at 5A. 42mins.

Also, although we are now comparing runtimes from both chargers, don't forget that with the extra temperatures gained from charging with the CDC, I'm sure the cells will deteriorate much faster. Which means that after another 10 charges, you should see a drop in the numbers, especially runtimes.

I don't think the problem here is the time it takes to charge, because a few minutes doesnt change anything. But the point here is i think Eagle Model designed the charger in such a way to use the existing peak detection techniques and still forcibly packing a bit more charge into the cells, so that the racers gain more performance. However as I notice from the forums and with other local racers, many don't give a crap about battery life all they care is to be faster than the next guy.

I know what I'm saying now is going to stoke a lot of CDC users, but don't forget I also own 2 CDC chargers.
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Old 12-09-2004, 05:46 PM   #49
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Quote:
Originally posted by Mr. Shookie
If your "other" charger is taking less time to discharge than the CDC than you have a real point. I would rather have a pack that has better run time than higher mah discharge.
Stephen <><
Stephen,
Better runtime = higher mAh discharge.
runtime = discharge / discharge current x 3600 seconds
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Old 12-09-2004, 09:27 PM   #50
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I think What I was getting at is the Internal resistance. I have had a pack discharge to .9 per cell faster than other packs = less runtime is greater, some packs that get a higher charge can get better runtimes. I was just curious what the total time it took to discharge each pack, not the charger as I may have wrote the question wrong. If you are getting better runtimes from your CDC than your Cell Master than you have something that is a significant difference. I am surrious when I get my cells to do such tests with the CDC and MY GM Commander.
Hope this clarifies things. Yes I understand MAH but internal resistance plays a role also.
Thanks for listening to round two of my rant.
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Last edited by Mr. Shookie; 12-09-2004 at 09:42 PM.
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Old 12-09-2004, 09:32 PM   #51
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COrrect me if i am wrong.
Discharge mAH = Run time
Ir = Voltage (lower IR higher Voltage and vice versa)

If a single cell does discharge faster down to 0.9v then other cells, how can this particular cell be better in terms of run time?
Sorry for sounding ignorant but i hope you can explain more on this.
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Old 12-09-2004, 10:47 PM   #52
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Umm..no charger can alter the IR of a cell.
Talk of IR belongs to cell brand/chemistry/model/matcher..not charger.

Ok, since you guys don't like discharge capacity:
1. Cell charged with CDC, discharged at 10A : 1117s
2. Cell charged with Cell master , discharged at 10A :1109s

When I compare the discharge or runtime of a same pack of cells against different chargers, it was ONLY meant to show you that both chargers can achieve a FULL CHARGE, however with the CDC achieving it with way more heat than the Cell master.
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Old 12-09-2004, 10:52 PM   #53
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Mr.Shookie:
I hope you see that the 8 secs of extra runtime is not significant, in fact it is a variance.
difference between 1109 and 1117 is less than 1%.
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Old 12-10-2004, 08:59 AM   #54
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That is all that I was curious about. Sorry if I came off misguided or uneducated. I wanted to find out if both chargers were perducing the same type of runtimes. I still plan on running a few tests of my own due to the fact that I am worried about the life of the cells. Is the overheating(however slightly) causing the life span of the cells to reduce significantly over a short period or is is worth getting them charged up heavy if it will get you a bit more out of your cells?
Well sorry if I caused any problems or misguildedness,
Stephen <><

Quote:
Originally posted by lee82gx
Umm..no charger can alter the IR of a cell.
Talk of IR belongs to cell brand/chemistry/model/matcher..not charger.

Ok, since you guys don't like discharge capacity:
1. Cell charged with CDC, discharged at 10A : 1117s
2. Cell charged with Cell master , discharged at 10A :1109s

When I compare the discharge or runtime of a same pack of cells against different chargers, it was ONLY meant to show you that both chargers can achieve a FULL CHARGE, however with the CDC achieving it with way more heat than the Cell master.
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Old 12-10-2004, 09:59 AM   #55
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Quote:
Originally posted by Mr. Shookie
I still plan on running a few tests of my own due to the fact that I am worried about the life of the cells. Is the overheating(however slightly) causing the life span of the cells to reduce significantly over a short period or is is worth getting them charged up heavy if it will get you a bit more out of your cells?
Well sorry if I caused any problems or misguildedness,
Stephen <><
I seriously think that heat will reduce the life of the cells.
The only way to find out is to conduct repeated charge/discharge cycles.
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Old 04-12-2005, 06:40 AM   #56
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Hi guys

any of you guys have expereince with the CDC ver 6... the model before the 6.0b

I would like to turn of trickle charge mode if possible.

think in advance guys
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Old 04-12-2005, 08:23 AM   #57
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I just want ot say, this is a good charger. Except for the back light, I can't complain.
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Old 04-12-2005, 09:09 AM   #58
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Default Comparison to Nosram Stealth

Recently got my 2nd charger ~ NOSRAM stealth system.

Comparing between the 2 chargers
a. Packs charge by CDC indeed is hotter.
b. NOSRAM charge my packs faster though both are set at 5A charge rate.
Both starts at the same time but at about 1600mAH on CDC the stealth is already close to 1800 mAH.

I heard for the CDC the delta peak is not really that accurate thus the packs are much hotter. Nevertheless compare by NOSRAM I still prefer CDC cos much more functions esp higher discharge, partial charge mode, selectable melodies etc.
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Old 04-12-2005, 03:07 PM   #59
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packs are getting way to hot what should i do ?
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