R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 06-29-2005, 01:50 PM   #541
Tech Fanatic
 
Arun's Avatar
 
Join Date: Jun 2003
Location: GA
Posts: 753
Default

Quote:
Originally Posted by komkit
Not a problem, ours sound alike and starts with "K"


Arun, how do you prepare IB3800 before charging them? Do you tray them down before charging?

I will try the profile that you posted next weekend. Not sure if I will get the packs before this weekend.

Thanks,
Komkit, Michael from ThunderRC did recommend traying them down before charging. He also mentioned that if they are going to be stored for two weeks or more, you should put a 500sec charge back into the pack (after taking it down to .90v per cell first). Some people are also beginning to dead-short for stock/19t much like with 3300's, but this is ONLY with the newest batch of cells. Apparently, there have been like 7 revisions so far.
__________________
http://nexusracing.com
Arun is offline   Reply With Quote
Old 06-29-2005, 02:23 PM   #542
Tech Master
 
komkit's Avatar
 
Join Date: Mar 2003
Location: Germantown, America
Posts: 1,789
Trader Rating: 6 (100%+)
Send a message via ICQ to komkit Send a message via AIM to komkit Send a message via Yahoo to komkit
Default

Quote:
Originally Posted by Arun
Komkit, Michael from ThunderRC did recommend traying them down before charging. He also mentioned that if they are going to be stored for two weeks or more, you should put a 500sec charge back into the pack (after taking it down to .90v per cell first). Some people are also beginning to dead-short for stock/19t much like with 3300's, but this is ONLY with the newest batch of cells. Apparently, there have been like 7 revisions so far.

Arun, that'll work. Yeah, he recommended the charging setup for my GFX. But for MMCM he recommend to ask you.

7 rev. of production in a few months not too bad. There is no marking, I guess..

I'll let you know in a week or so how it work Got to give Kumpol a call, I need 1 more MMCM

MMCM made my 17 months old (8 packs) working like they were just bought 2 months ago...

Thanks
__________________
CFX Paintworks - The Track
komkit is offline   Reply With Quote
Old 07-02-2005, 07:32 PM   #543
Tech Master
 
Alex C's Avatar
 
Join Date: Feb 2005
Location: On a ship in the warm seas with no sail !!!
Posts: 1,638
Trader Rating: 50 (100%+)
Default

Quote:
Originally Posted by kumpol
Step 1
2600mA 7.0A
Fn

Step 2
2630 0.2A
Fn

Step 3 4200mA 5.0A
Tn 48 10 R1
repeak 1 delay 5min. repeak capacity 250mAh


This profile is from Ryan Lee. He set this for a couple people in 19T class at the Reedy 2005. And I found out this was very good for 19T class at the Reedy.
Question?
On step 3 4200mA 5.0A
Tn 48 10 R1

What does (Tn 48) mean
What does (10) mean

and was these CTX charge profiles for a battery than has been taken down to 0.0 Volts!!

Thank You all in Advance for all the Information!

Best Regards

Alex
__________________
Alex Cortez
Thank You to all My Sponsors
Ko Propo USA / RC America - Xray - Hudy / Max Power Engines / VP PowerMaster Fuel / Team Espo - "Lay it down Prop"!!!!
Alex C is offline   Reply With Quote
Old 07-02-2005, 08:00 PM   #544
s2
Tech Adept
 
s2's Avatar
 
Join Date: Feb 2004
Location: nr Coventry, UK
Posts: 239
Default

Quote:
Originally Posted by Alex C
Question?
On step 3 4200mA 5.0A
Tn 48 10 R1

What does (Tn 48) mean
What does (10) mean

and was these CTX charge profiles for a battery than has been taken down to 0.0 Volts!!

Thank You all in Advance for all the Information!

Best Regards

Alex
Hi,

Tn, means that 'Trickle - No', during CTX setup the trickle feature must be on the 'No' state, basically trickle turned off

48, this is the temperature at which the cells will stop charging if they get to 48*C before the peak detect activates.

10, this is the Mv value of the peak detect for the whole pack, 10Mv.

CTX charge is only for discharged cells, if u try to CTX charge a partially charged pack due to the 1st to CTX stages having long lock out activated theses partially charged cells may become overcharged, i do not think 0.0V is nesesserally needed the regular 5.4V discharge is fine. I think for best results it is best to tray cells to around 5.4V, then put straight to charge.

Regards,

Stew

Last edited by s2; 07-02-2005 at 08:11 PM.
s2 is offline   Reply With Quote
Old 07-02-2005, 08:09 PM   #545
Tech Master
 
Alex C's Avatar
 
Join Date: Feb 2005
Location: On a ship in the warm seas with no sail !!!
Posts: 1,638
Trader Rating: 50 (100%+)
Default

Quote:
Originally Posted by s2
Hi,

Tn, means that 'Trickle - No', during CTX setup the trickle feature must be on the 'No' state, basically trickle turned off

48, this is the temperature at which the cells will stop charging if they get to 48*C before the peak detect activates.

10, this is the Mv value of the peak detect, 10Mv.

CTX charge is only for discharged cells, if u try to CTX charge a partially charged pack due to the 1st to CTX stages having long lock out activated theses partially charged cells may become overcharged, i do not think 0.0V is nesesserally needed the regular 5.4V discharge is fine. I think for best results it is best to tray cells to around 5.4V, then put straight to charge.

Regards,

Stew

Thanks Again Stew for all your help
__________________
Alex Cortez
Thank You to all My Sponsors
Ko Propo USA / RC America - Xray - Hudy / Max Power Engines / VP PowerMaster Fuel / Team Espo - "Lay it down Prop"!!!!
Alex C is offline   Reply With Quote
Old 07-02-2005, 10:27 PM   #546
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

Quote:
Originally Posted by Arun
Guo Chen,
Here is one profile for 3700/3800. The newer cells seem to be more sensitive to overcharge, so I would not set the delta peak any higher than 06 or the temp any higher than 48. It is important that the 3700 and 3800 batteries peak below 130 deg Fahrenheit.

Step 1
3050mA 7.0A
Flex off

Step 2
3080 0.2A
Flex off

Step 3
4900mA 4.0A
Flex off
Temp 48
delta peak 05


Hara used a different setting at the Reedy Race with 3700:

Step 1
50mA 0.7A
Flex off

Step 2
2500 7A
Flex off

Step 3
4600mA 5.5A
Flex off
hey Arun
will it have any difference if i set it to be 03 instead of 06? it mean 03=0.003 per cell or for whole pack? thanks
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-02-2005, 10:30 PM   #547
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

for SMC they had recomemded to charge their cell at 6 amp linear and 0.03(30MV) so what should i put on the delta peak in cell master? 03 or 30? thanks
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-02-2005, 10:43 PM   #548
wyd
Tech Legend
 
wyd's Avatar
 
Join Date: Sep 2001
Location: Castle Mamba Max Pro. Feel its power!!!!!!!!!!
Posts: 21,143
Trader Rating: 50 (100%+)
Send a message via AIM to wyd
Default

Quote:
Originally Posted by Guo Chean
for SMC they had recomemded to charge their cell at 6 amp linear and 0.03(30MV) so what should i put on the delta peak in cell master? 03 or 30? thanks
03. You go 30 and your more than likely over charge and melt down you packs.
__________________
Castle Creations (Since 2005) Just awesome products
Bumps & Jumps RC (Great Indoor facility for offroad and oval)
ST Racing Concepts (STRC)
Custom Works (Best Oval Cars around)
wyd is offline   Reply With Quote
Old 07-02-2005, 11:31 PM   #549
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

Quote:
Originally Posted by wyd
03. You go 30 and your more than likely over charge and melt down you packs.
is that 03 stand for 0.03volt delta peak???
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-02-2005, 11:42 PM   #550
Tech Regular
 
Ryan Lee's Avatar
 
Join Date: Nov 2004
Location: Seoul, Korea
Posts: 254
Default 03 stands for

Quote:
Originally Posted by Guo Chean
is that 03 stand for 0.03volt delta peak???
0.003V =3mV

Ryan
Ryan Lee is offline   Reply With Quote
Old 07-03-2005, 01:50 AM   #551
Tech Master
 
Guo Chean's Avatar
 
Join Date: Jan 2005
Location: Indiana, PA15701
Posts: 1,492
Trader Rating: 4 (100%+)
Send a message via ICQ to Guo Chean Send a message via Yahoo to Guo Chean
Default

Quote:
Originally Posted by Ryan Lee
0.003V =3mV

Ryan
so like SMC recomemded 0.03V for peak detect i need to put it until 30MV? so what actually i need to set the delta peak detection? 03 or 30? thanks
__________________
[FONT=Comic Sans MS][SIZE=3][COLOR=red]|HotBodies|HPI|Full Throttle Motorsports|KO PROPO|DSM|Nosram|JACO|MUCH MORE RACING|Schacht Design Works|[/COLOR][/SIZE][/FONT]
Guo Chean is offline   Reply With Quote
Old 07-03-2005, 05:26 AM   #552
Tech Master
 
komkit's Avatar
 
Join Date: Mar 2003
Location: Germantown, America
Posts: 1,789
Trader Rating: 6 (100%+)
Send a message via ICQ to komkit Send a message via AIM to komkit Send a message via Yahoo to komkit
Default

Quote:
Originally Posted by Ryan Lee
0.003V =3mV

Ryan
Ryan,

Let me see if I understand this right.

MMCM delta peak setting is base on individual cell NOT the whole pack?

Because there is no possible way for the MMCM to monitor and taking the voltage sample for individual cell while we are charging the cells in series.

If 03 in the setting mean 3mV and in the set up menu when you tell the MMCM that you are charging 6 cells pack. Then the MMCM will do the calculation for you and monitoring 18mV NOT the 3mV

If the setting is set for 4 cells, then the MMCM will monitor 12mV.

Do I understand this correctly?
__________________
CFX Paintworks - The Track
komkit is offline   Reply With Quote
Old 07-03-2005, 05:27 AM   #553
Tech Master
 
komkit's Avatar
 
Join Date: Mar 2003
Location: Germantown, America
Posts: 1,789
Trader Rating: 6 (100%+)
Send a message via ICQ to komkit Send a message via AIM to komkit Send a message via Yahoo to komkit
Default

Quote:
Originally Posted by wyd
03. You go 30 and your more than likely over charge and melt down you packs.

Regardless, you want one......I can see it in your eyes....you keep looking over my shoulder
__________________
CFX Paintworks - The Track
komkit is offline   Reply With Quote
Old 07-03-2005, 06:09 AM   #554
Tech Regular
 
antoniop's Avatar
 
Join Date: Aug 2001
Location: Lisbon, Portugal
Posts: 371
Default

Quote:
Originally Posted by Guo Chean
so like SMC recomemded 0.03V for peak detect i need to put it until 30MV? so what actually i need to set the delta peak detection? 03 or 30? thanks
http://www.mrc-pt.com/downloads/e5-6.pdf

At the end of last page it says 03-99 MV/pack.
The setting is for the WHOLE pack.
antoniop is offline   Reply With Quote
Old 07-03-2005, 07:10 AM   #555
Tech Master
 
komkit's Avatar
 
Join Date: Mar 2003
Location: Germantown, America
Posts: 1,789
Trader Rating: 6 (100%+)
Send a message via ICQ to komkit Send a message via AIM to komkit Send a message via Yahoo to komkit
Default

Thatís why I was just wondering. To me 3mV/pack seems a little bit too low. If I was to charging a 6 cells pack with 3mV threshold setting. Meaning 3mV divided by 6 cells = 0.05mV. Now thatís 50 microvolt per cell. Even we bumped up the threshold to 6mV/pack still that gives us 1000 microvolt. We will all have to have IDENTICAL characteristic cells in our pack. It doesnít take much for a single cell to drop 1 or 2 mV during its peak. Its only takes 2 cells to drop more than the other 4 cells.

The step charging is pretty much guaranty 1 and 2 steps your pack will never fault peak. But what about the 3 step? So your cells in that particular pack have to be a top notch or a perfect matched, otherwise you might be having 2 bad apples out of 6 apples. That is if the threshold is setting TOO LOW.

Individual cell charging and monitoring system is the way to go I guess. MMCM is the way to go as of right now, Iíll experimenting some more on the threshold settings. In my opinion Iíd rather cooked my packs then not having enough juice.
__________________
CFX Paintworks - The Track
komkit is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS/FT: TEAM MUCH MORE Motor Master & Cell Master litespeed-dom R/C Items: For Sale/Trade 15 06-15-2006 08:44 PM
Team Orion Advantage w/ LiPo or Team Much More Cell master? RH Customs Electric On-Road 6 04-06-2006 06:05 PM
Team Much More Cell Master FRP R/C Items: For Sale/Trade 4 01-25-2006 03:04 PM
Team Much More Racing CTX Cell Master and CTX Motor Master letitroll R/C Items: For Sale/Trade 7 11-18-2005 11:25 AM
Team Orion Advantage or Team Much More Cell Master charger alana07 Electric On-Road 1 12-18-2004 05:37 AM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 08:39 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net