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Old 12-01-2005, 02:08 AM   #871
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Hi,


I have problems to with my CM ,I think my setup in the charger is wrong.Last race my charger stopped on +-2300 and my battery was discharged @20amp and later on a Rayspeed discharger.I use 18Mv ( 3mv @ 1cell x6cells) = 18Mv??

I'm using GP3700 Orion battery's.This is my e-mail adress and messenger [email protected] PLS HELP ME
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Old 12-02-2005, 03:44 PM   #872
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Hi I need a CTX profile for Nosram 3000 batteries.
I race in a stock class and race duration is 10 mins with 21 turn motor.

Thanks
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Old 12-05-2005, 10:32 AM   #873
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How hot are the cells when they stop? If they're under 100F, then put them in a bit longer, and have the Temp Cutoff kick in at a higher temp, maybe 110-115. Some do 125-130, but that's a bit much for me..

Quote:
Originally Posted by belgianchamp
Hi,

I have problems to with my CM ,I think my setup in the charger is wrong.Last race my charger stopped on +-2300 and my battery was discharged @20amp and later on a Rayspeed discharger.I use 18Mv ( 3mv @ 1cell x6cells) = 18Mv??

I'm using GP3700 Orion battery's.This is my e-mail adress and messenger [email protected] PLS HELP ME
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Old 12-05-2005, 11:30 AM   #874
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125-135 is what your shooting for at peak.
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Old 12-06-2005, 10:18 PM   #875
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A couple quick questions. I have a cell master on it's way and can hardly wait for it to arrive so I can try thing thing out.

Questions: Do you have to use 3 steps when charging with the CTX? Can you only do two steps.

Related to that what is the point of the 30mah at a low amp prior to finishing off the battery at a lower charge rate.

Also how are people determining when to step down? Is there a formula you guys are following or just guessing? It seems like the longer you charge at a high amp rate the more performance you will get out of the batteries. I guess I will be able to answer some of these questions when I get my cell master.

Last one. At what point (mah) does the temp in the cells start to go up? Anyone determine this for GP3300 and GP 3700? I know the temp remains pretty stable during charging for the most part and then as it nears capacity the temp ramps up but when does this normally happen with a fully discharged batter?

Thanks for the input.
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Old 12-08-2005, 01:55 PM   #876
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One more. Does this charger give you battery internal resistance measurements during charging?
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Old 12-08-2005, 02:53 PM   #877
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You can see IR measurement after the disharge is finished

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Old 12-08-2005, 02:57 PM   #878
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Ok- I am used to seeing charge internal resistance on my integy chargers that I judge battery age with. I was not planning on discharging batteries on the cell master so I was hoping you could get internal resistance during the charge cycle.

Thanks
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Old 12-08-2005, 03:50 PM   #879
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Quote:
Originally Posted by Casper
A couple quick questions. I have a cell master on it's way and can hardly wait for it to arrive so I can try thing thing out.

Questions: Do you have to use 3 steps when charging with the CTX? Can you only do two steps.

Related to that what is the point of the 30mah at a low amp prior to finishing off the battery at a lower charge rate.

Also how are people determining when to step down? Is there a formula you guys are following or just guessing? It seems like the longer you charge at a high amp rate the more performance you will get out of the batteries. I guess I will be able to answer some of these questions when I get my cell master.

Last one. At what point (mah) does the temp in the cells start to go up? Anyone determine this for GP3300 and GP 3700? I know the temp remains pretty stable during charging for the most part and then as it nears capacity the temp ramps up but when does this normally happen with a fully discharged batter?

Thanks for the input.
1) You can do only two steps if you wish...all you have to do is set the FIRST step to 0000mah.

2) A little bit of both. We start with what is provided to us, and work from there. You are correct in that the longer you charge at higher amps, the more power.

3) This is one thing that makes the Cell Master different from other chargers. With the CM, the battery gets its temperature during charge as opposed to at the end of charge. This is because the CM's super linear current naturally gets the battery hotter. Another result of this is that you will set unusually low delta peak settings (compared to other chargers). The amount of time that the battery's voltage actually drops becomes very short and constant with the CM. Basically, you don't have to overcharge the battery with the CM in order to get power. In fact, some factory racers use the zero delta peak in certain situations.
More information on this here: http://nexusracing.net/newsdesk_info.php?newsdesk_id=29
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Old 12-08-2005, 04:22 PM   #880
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Thanks for the info. I am sure I will have more questions when I finally get my hands on the charger. It is in the mail!
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Old 12-09-2005, 05:46 PM   #881
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hi. my ctx-c is only 2 weeks old.

however my ^ button is not working well.... when i push it lightly, the button clicks but nothing happens. to make it work, i have to push it hard and hold it for a little while....

is this an easy fix, like opening it up and cleaning the connectors? is it a common problem?

i dont want to void warranty, but if its easy to do, i rather do it myself than go without a charger for a month.

ryan lee, can u advise what i should do?
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Old 12-10-2005, 12:34 PM   #882
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Hi Guys,

Is the cell master able to charge Li-Po batteries ?

thanks
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Old 12-10-2005, 01:26 PM   #883
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yup
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Old 12-10-2005, 04:17 PM   #884
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Oh yes it does

You can download it's manual here

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Old 12-11-2005, 07:39 PM   #885
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Yesterday, I can't charge my Li-Po with usual setting 3cells 0.7A using CellMaster. There is *TEMP CUT* pop up instantly after the charging start and then aborted.
I'm sure temp probe is not touching any hot surface.
This case only happened in LI-po function on the charger

Never experience case like this. Any help would be appreciated. Thanks.
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