R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-22-2005, 11:54 PM   #1
Tech Elite
 
GrandeGixxer's Avatar
 
Join Date: Jun 2004
Location: Waldorf, MD
Posts: 2,929
Trader Rating: 15 (100%+)
Default Cell Temperature

While charging a pack, I noticed that 1 cell was quite a bit warmer than the other 3. The cell on the - side was 100 degrees and the other 3 were right around 80 1300 seconds into the cycle. These are SMC 3300 batts. Charging at 5a with a Duratrax Ice charger. What does this mean? More IR for that cell?
__________________
Joe Cude
Mugen MBX-7R Mugen MTX-6R Mugen MTC-1 Mugen MRX-6 Mugen MST-1 Tamiya Euro Truck

Last edited by GrandeGixxer; 11-23-2005 at 12:04 AM.
GrandeGixxer is offline   Reply With Quote
Old 11-23-2005, 12:11 AM   #2
Tech Adept
 
rainman318's Avatar
 
Join Date: Nov 2005
Posts: 167
Default

I had a pack do something similar i discharged it on the tray and when i tried to charge it again one cell got hot quick. I checked the solder joints and the bar to see if it was shorting that cell out some how. I never found anything. I tried it a few more times and it would do the same thing and say no batt connected after a min. I assume that cell had gone bad. I shure hated to lose a pack so if anyone knows. I would also like hear some ideas
rainman318 is offline   Reply With Quote
Old 11-23-2005, 12:31 AM   #3
Suspended
 
Join Date: Jul 2003
Posts: 5,108
Trader Rating: 14 (100%+)
Default

That means that its coolant is low. Add some water and it should be fine.
Phatkat is offline   Reply With Quote
Old 11-23-2005, 03:52 PM   #4
Tech Elite
 
GrandeGixxer's Avatar
 
Join Date: Jun 2004
Location: Waldorf, MD
Posts: 2,929
Trader Rating: 15 (100%+)
Default

Should I dip the whole pack in water? or just that cell? It didn't get really hot. Peak temp was about 120-125 for that cell and around 115 for the other 3.
__________________
Joe Cude
Mugen MBX-7R Mugen MTX-6R Mugen MTC-1 Mugen MRX-6 Mugen MST-1 Tamiya Euro Truck
GrandeGixxer is offline   Reply With Quote
Old 11-23-2005, 03:57 PM   #5
Tech Fanatic
 
Join Date: Jun 2003
Location: South Carolina
Posts: 835
Default

I would go on Danny's thread and ask him for advice.
Hyper1 is offline   Reply With Quote
Old 11-23-2005, 06:39 PM   #6
Tech Master
 
Join Date: May 2003
Location: SAN DIEGO
Posts: 1,125
Trader Rating: 62 (100%+)
Default

If you have a discharger that can discharge only one cell, then test them. What I do is charge the whole pack together and then discharge each cell individually. If the cell that is getting hot has much lower numbers than the other ones, then your question is answered.
__________________
TEKNO RC * TLR * EXOTEK
patrick is online now   Reply With Quote
Old 11-23-2005, 07:44 PM   #7
Suspended
 
Join Date: Jul 2003
Posts: 5,108
Trader Rating: 14 (100%+)
Default

Quote:
Originally Posted by GrandeGixxer
Should I dip the whole pack in water? or just that cell? It didn't get really hot. Peak temp was about 120-125 for that cell and around 115 for the other 3.

You have to drill a hole in it first.
Phatkat is offline   Reply With Quote
Old 11-23-2005, 08:19 PM   #8
Tech Master
 
17driver's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2003
Location: Mayville,Wi
Posts: 1,382
Default

Quote:
Originally Posted by Phatkat
That means that its coolant is low. Add some water and it should be fine.
lmao
__________________
Midwest malitia member
17driver is offline   Reply With Quote
Old 11-27-2005, 08:27 PM   #9
Tech Regular
 
bikedoctor's Avatar
 
Join Date: Aug 2005
Location: Shreveport, Louisiana
Posts: 384
Trader Rating: 1 (100%+)
Default

bump.

found it for ya Big A.
bikedoctor is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
cell temperature while charging zenithrr Electric On-Road 0 04-20-2008 11:17 PM
Temperature Gun Michael_T Australia For Sale/Trade 1 10-09-2007 06:11 PM
(PCR) Temperature Gun stimcon R/C Items: For Sale/Trade 5 09-13-2006 02:21 PM
What Temperature For Soldering? Nrctc3 Electric On-Road 11 07-26-2004 07:14 AM
MIP temperature Gauge stefan R/C Items: For Sale/Trade 0 09-25-2002 08:07 PM



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 06:21 PM.


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