R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-05-2007, 09:18 PM   #1
Tech Apprentice
 
Join Date: Jul 2007
Posts: 67
Default difference in discharging amps

Can someone explain to me the difference in discharging at 10a instead of 30a. do you want a higher amp when you do it? What are the benefits and disadvantages of each. What is the best way? this is for ni-mh
esdjc is offline   Reply With Quote
Old 11-06-2007, 06:12 AM   #2
Tech Apprentice
 
Join Date: Jul 2007
Posts: 67
Default

t
esdjc is offline   Reply With Quote
Old 11-06-2007, 06:20 AM   #3
Tech Fanatic
 
scootr117's Avatar
 
Join Date: Jun 2006
Location: On a Stage or Stand somewhere
Posts: 939
Default

I believe most do it at a higher amp rate to gauge run time of a pack...and also to quickly bring them down to equalize them...........It also conditions them?? not sure
scootr117 is offline   Reply With Quote
Old 11-06-2007, 06:23 AM   #4
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

With 30A your pack will be discharged about 3x quicker than 10A. So if it is just for discharging it doesnt really matter what current you take its just that an extremely high discharge current will cause a lot of heat on the cells so isnt that healthy.

For matching packs on the other hand, a higher discharge current will weed out the good cells from the bad cells better because you also get a higher voltage drop.
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 11-06-2007, 07:39 AM   #5
Tech Regular
 
Join Date: Jul 2007
Posts: 295
Trader Rating: 2 (100%+)
Default hmm.....

so wat discharging current do u recommend for stick packs like gp3700 and the ib4200wc stick packs
hottapole is offline   Reply With Quote
Old 11-06-2007, 08:01 AM   #6
Tech Apprentice
 
Join Date: Jul 2007
Posts: 67
Default

i have matched packs. So higher is better for matched only then?
esdjc is offline   Reply With Quote
Old 11-06-2007, 08:38 AM   #7
Tech Elite
 
Francis M.'s Avatar
 
Join Date: Apr 2002
Location: Yorba Linda, CA
Posts: 4,719
Trader Rating: 2 (100%+)
Default

like someone said the 30 amps just discharges faster thats all.
__________________
TQ-racing Yokomo BD7 Airtronics
Francis M. is offline   Reply With Quote
Old 11-06-2007, 09:02 AM   #8
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,661
Default

Ivan -

If all you are doing is pulling the packs down after a race, and all you have is a charger/discharger that does linear mode (constant current discharge), I would use the 10A mode. A 30A linear discharge will unnecessarily add heat to your cells. That's why dischargers like the Trinity DPD and Muchmore CTX-D use a pulse mode discharge for the 30A setting. The DPD uses 5A discharge for the linear mode. Obviously a matcher like the Turbomatcher uses 30A or 35A linear mode to help weed out weak cells, but for weekly maintenance, the 10A mode would be recommended for you.
CarbonJoe is offline   Reply With Quote
Old 11-06-2007, 09:23 AM   #9
Tech Apprentice
 
Join Date: Jul 2007
Posts: 67
Default

thanks. someone told me that discharging at a higher rate was better besides the fact that it does it faster and i just wanted to clear that up.
esdjc is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
ESC 600 AMPS LINEAR 1200 AMPS MAX Windbreaker_guy R/C Items: For Sale/Trade 0 07-30-2007 03:49 AM
Pulse vs Linear DISCHARGING (also vs Multi-step discharging) akuhon Electric On-Road 5 01-01-2007 11:58 PM
Discharging and Discharging Question jeffbhhs Electric On-Road 5 12-14-2006 06:34 PM
confusied how many amps for discharging Rasmus TbEvo IV Electric On-Road 3 04-03-2006 07:49 PM
Discharging TRAJ Electric On-Road 9 03-03-2005 05:44 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 02:25 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net