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Old 10-10-2005, 01:37 AM   #496
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Why discharge at 30/35 amps. If you train your packs to work hard or harder they will perform better than if you train them at a lesser rate. Some NiMh have no memory but this isn't true. When we match cells on the TM4s they will reach 180-190 degrees and they can handle these temps with no issues.
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Old 10-10-2005, 04:32 AM   #497
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so which amp rate do we discharge at?at the moment im discharging at 10a on my ice,but as stated that is not good.should i discharge at 20A or 30A?im going to build a bulb discharger(or maybe a resistor one).im not racing in modded class.im mainly looking for long run times.thanx
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Old 10-10-2005, 07:16 AM   #498
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Quote:
Originally Posted by shortyboy
so which amp rate do we discharge at?at the moment im discharging at 10a on my ice,but as stated that is not good.should i discharge at 20A or 30A?im going to build a bulb discharger(or maybe a resistor one).im not racing in modded class.im mainly looking for long run times.thanx
Which amp rate? As Danny started discharge at 30-35 amps. If your charger can only dischage at 10 amps, buy the Integy dischage tray that discharges at 30 amps. And I really don't think it matters what class you are in. What matters is how we take care of our expensive batteries so we get the best performance and longest life out of them.
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Old 10-10-2005, 10:41 AM   #499
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Quote:
Originally Posted by shortyboy
so which amp rate do we discharge at?at the moment im discharging at 10a on my ice,but as stated that is not good.should i discharge at 20A or 30A?im going to build a bulb discharger(or maybe a resistor one).im not racing in modded class.im mainly looking for long run times.thanx

If your not worried about power and only care about capacity then discharging at 10 will work for you. When I reccomend something it's always based on racing and racers typically want the highest possible power.
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Old 10-10-2005, 11:25 AM   #500
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Quote:
Originally Posted by josh69162
What discharges at 35 amps?
-Josh
Futaba CDR-5000 discharges up to 40A. But the wires get VERY hot and may melt the rubber sleeves.
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Old 10-10-2005, 11:27 AM   #501
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Originally Posted by josh69162
I was looking at the MM Cell Master as well as the Orion Advantage, and after Danny's recommendation, I'm going to go with the Pitbull X3. I don't really need the motor run-in feature, and with the Pitbull, I still get the Turbo-35 quality charging. It has the step charge, which is a must for me, and it has more delta peak value selection. The Pitbull X3 can measure down to 2mV/cell, while the Advantage and Cell Master only go down to three. The discharge on the Cell Master is only 10 amps. If I need a 10 amp discharge, I'll run it in my car. All of them have long lockout, I believe. One thing that would be interesting to play with though, is the zero delta peak on the Cell Master. It's where if the voltage levels out for eight seconds or so, it terminates the charge. But when it comes down to it, the simplicity, cheaper price, and the high quality CE charging is what attracted me to the Pitbull.
-Josh
I guess you misunderstood our posts in the Cell Master forum. The Cell Master can go as low as 3mV (.003V) for the PACK; that is 0.5mV (.0005V) per cell (6 cell). AFAIK that is the lowest threshold out of all chargers on the market. It also does have the zero delta peak mode as you described.

Because of the CM's SLC feature, it utilizes lower delta peak values than other chargers. I usually have my delta peak set around 6mV (.006V) for a IB3800 pack on the Cell Master.

This is not the case for the Orion Advantage, though. It uses standard delta peak settings like the T-35, pitbull, etc.
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Old 10-10-2005, 09:54 PM   #502
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was looking at getting some of these new 3800's, wondering if one of the matchers posting on this thread could give some insight on how many times per day you can run the new IB3800's without sacrificing any performance? If more than once, how long between charges and do you discharge before charging them the second time? thanks for your help

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Old 10-10-2005, 10:33 PM   #503
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I'm just a mere club racer, but from what other racers have been posting the packs are actually better the 2nd time around, provided they are given ample time for cooling... But the times may have changed...
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Old 10-10-2005, 10:34 PM   #504
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You can safely run a battery twice in one day....the key is discharging it correctly, using a good quality tray on it, and allowing the battery time to cool before you begin recharging.....

The IB3800 or GP3700 both can be used like this....

While I am sure you could run it a third time if there was enough time in between races....I would not recommend going over 2....

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Old 10-10-2005, 10:48 PM   #505
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Quote:
Originally Posted by racer-oZ
was looking at getting some of these new 3800's, wondering if one of the matchers posting on this thread could give some insight on how many times per day you can run the new IB3800's without sacrificing any performance? If more than once, how long between charges and do you discharge before charging them the second time? thanks for your help

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Old 10-11-2005, 09:13 AM   #506
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eddieo, thanks for the info, couple other questions, what voltage cutoff do you discharge the packs down to before recharging them for the second run?

Also, when i look at your voltage and runtime numbers on your website for the 3800's is that at a 30amp or 35amp discharge? appreciate your help

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Old 10-11-2005, 09:19 AM   #507
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Racer- I believe Brood's numbers are all at 35 amps. Matched by SMC. Those batts he has online do look tempting....lol

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Old 10-11-2005, 09:23 AM   #508
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You absolutley can run them twice a day. I ran 12th stock Sunday and for the Main I let a guy borrow one of my IB's and he had his fastest lap-fastest run with it on its second charge and finished with mega runtime to spare. There was a good 3 hour or more rest for the pack.

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Old 10-11-2005, 10:23 AM   #509
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Does anyone know when the black label IB3800's will be available?
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Old 10-11-2005, 10:27 AM   #510
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Not sure what you heard but IB3800s are staying in there regular shrink no new label.
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