Go Back  R/C Tech Forums > General Forums > Radio and Electronics
Ways to discharge lipos >

Ways to discharge lipos

Community
Wiki Posts
Search

Ways to discharge lipos

Thread Tools
 
Search this Thread
 
Old 09-24-2012 | 08:52 AM
  #1  
RickSlick's Avatar
Thread Starter
Tech Regular
 
Joined: Jun 2011
Posts: 310
From: Deerfield Beach Florida
Default Ways to discharge lipos

Sometimes I do not use my fully charged lipos when I return home from the track. I have a good quality charger but it has no discharge feature.

What is a good safe and slow way to discharge my lipos with overheating or damage? What type of devise can I hook up to the battery which will discharge it?

Thanks, Rick
RickSlick is offline  
Old 09-24-2012 | 09:47 AM
  #2  
greywolf74's Avatar
Tech Regular
iTrader: (47)
 
Joined: Sep 2011
Posts: 310
Default

You can use a bulb discharger plugged into the main plug, along with a low voltage alarm plugged into to the balance adapter is a good way

http://www.onlybatterypacks.com/items.asp?db=13
greywolf74 is offline  
Old 09-24-2012 | 11:29 AM
  #3  
Tech Rookie
 
Joined: May 2012
Posts: 12
From: Portland, OR
Default

Why would you wanna discharge lipos? it is better to leave them charged up.
pdxrc2838 is offline  
Old 09-24-2012 | 11:33 AM
  #4  
apriliamille's Avatar
Tech Addict
iTrader: (7)
 
Joined: Aug 2011
Posts: 520
From: Utah
Default

im sending you a pm
i do not know if its right and fair to post up an outside forum link
apriliamille is offline  
Old 09-24-2012 | 12:10 PM
  #5  
EricW's Avatar
R/C Tech Elite Member
iTrader: (1)
 
Joined: Nov 2006
Posts: 1,995
From: Meriden, Ct
Default

Originally Posted by pdxrc2838
Why would you wanna discharge lipos? it is better to leave them charged up.
I've always read that storing a lipo fully charged is a bad idea.
EricW is offline  
Old 09-24-2012 | 12:27 PM
  #6  
hotrodchevy14's Avatar
Tech Elite
iTrader: (115)
 
Joined: Dec 2009
Posts: 2,549
Default

Originally Posted by EricW
I've always read that storing a lipo fully charged is a bad idea.
+1...if your not going to be racing for a while use your chargers storage mode, if it has one.
hotrodchevy14 is offline  
Old 09-24-2012 | 02:01 PM
  #7  
apriliamille's Avatar
Tech Addict
iTrader: (7)
 
Joined: Aug 2011
Posts: 520
From: Utah
Default

i try to keep mine at the 3.8 range when im not using them
apriliamille is offline  
Old 09-24-2012 | 02:53 PM
  #8  
GLwagon's Avatar
Tech Master
iTrader: (22)
 
Joined: Jun 2007
Posts: 1,282
From: Baraboo
Default

Originally Posted by pdxrc2838
Why would you wanna discharge lipos? it is better to leave them charged up.
Storage voltage is 3.78-3.82v per cell
SMC had a batch of cells that would puff when stored improperly.

Running them in the car works well.
I use my chargers that do have a storage/discharge feature, what charger are you using?
GLwagon is offline  
Old 09-24-2012 | 08:45 PM
  #9  
RickSlick's Avatar
Thread Starter
Tech Regular
 
Joined: Jun 2011
Posts: 310
From: Deerfield Beach Florida
Default

DuraTrax 235
RickSlick is offline  
Old 09-26-2012 | 06:32 AM
  #10  
RickSlick's Avatar
Thread Starter
Tech Regular
 
Joined: Jun 2011
Posts: 310
From: Deerfield Beach Florida
Default

I was standing in my local auto parts store and looking for light bulbs for a discharge devise when the light bulb in my head went off.
I went home and built a board that has mounted on it, an old motor, ESC, receiver so that I can simulated a running car. I plug the battery in, turn on the juice and tape the throttle of my transmitter to about 1/4 speed and let her run.

Comments on doing this
RickSlick is offline  
Old 09-27-2012 | 05:13 PM
  #11  
GLwagon's Avatar
Tech Master
iTrader: (22)
 
Joined: Jun 2007
Posts: 1,282
From: Baraboo
Default

If you have old esc's & motors, do the ESC's have lipo cut?

In the airplane world motors & esc's are inexpensive.
My one plane with a 8x4 prop will pull near 27amps full load.
Motor $10, ESC $15

Even 1/2 throtle would be plenty, but without a load there won't be much amp draw.

Most ESC's will usually cut near 3.2 to 3.0v per cell, unless it is adjustable.
GLwagon is offline  

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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.