Go Back  R/C Tech Forums > General Forums > Electric On-Road
Newb battery question? (go easy on me) >

Newb battery question? (go easy on me)

Newb battery question? (go easy on me)

Old 01-18-2007, 05:29 PM
  #1  
Tech Rookie
Thread Starter
 
Join Date: Dec 2006
Posts: 14
Default Newb battery question? (go easy on me)

I bought a couple of used batteries, the kind somebody assembled themselves side by side like this [][][][][][]. The positive end of the first battery is connected to the negative end of the last battery with a single wire. Why? What does that do?

Thanks.

Last edited by Shrike; 01-18-2007 at 07:13 PM.
Shrike is offline  
Old 01-18-2007, 05:37 PM
  #2  
Tech Addict
iTrader: (2)
 
shaggster's Avatar
 
Join Date: Feb 2006
Location: In my paint booth
Posts: 582
Trader Rating: 2 (100%+)
Default

If you can please post a picture of the pack to help others diagnose the problem.

From what your post says it sounds like the past user was "dead shorting" the pack.

Good luck,
Shaggy
shaggster is offline  
Old 01-18-2007, 06:25 PM
  #3  
Tech Rookie
Thread Starter
 
Join Date: Dec 2006
Posts: 14
Default

Here is a pic
Attached Thumbnails Newb battery question? (go easy on me)-p1182822.jpg  
Shrike is offline  
Old 01-18-2007, 07:36 PM
  #4  
Tech Elite
iTrader: (5)
 
Yeti35's Avatar
 
Join Date: Sep 2004
Location: SL, UT
Posts: 2,804
Trader Rating: 5 (100%+)
Default

They are deffinitely dead shorted. I wonder how long they have been like that and if they will come back. I personally never did that so I can't say for sure how they will be once you remove that wire and put a charge in them.
Yeti35 is offline  
Old 01-18-2007, 08:13 PM
  #5  
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

Deadshorted packs are said to have higher voltage but at the expense of runtime.

So usually those who race stock class might do this. The previous owner probably ran stock class.
Ben.C is offline  
Old 01-18-2007, 08:37 PM
  #6  
Tech Elite
iTrader: (5)
 
Yeti35's Avatar
 
Join Date: Sep 2004
Location: SL, UT
Posts: 2,804
Trader Rating: 5 (100%+)
Default

I run stock and have never done this myself. I understood it to be a marginal benefit at best. Plus the packs I have now are really not supposed to be deadshorted from what I was told. Too much money spent to risk ruining a pack like that imo.
Yeti35 is offline  
Old 01-18-2007, 08:42 PM
  #7  
Tech Elite
iTrader: (32)
 
Join Date: Jul 2005
Location: Philadelphia, PA
Posts: 3,121
Trader Rating: 32 (100%+)
Default

The pack on the right in the picture has a better chance of life being a GP pack (33 or 37), as they work when dead shorted, where the IB's store better with voltage in them.

Do you know how long the packs have been stored like that?
A. Rhodes is offline  
Old 01-18-2007, 08:43 PM
  #8  
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

Originally Posted by Yeti35
I run stock and have never done this myself. I understood it to be a marginal benefit at best. Plus the packs I have now are really not supposed to be deadshorted from what I was told. Too much money spent to risk ruining a pack like that imo.
Yes...From what I know so far. IBs do not like to be deadshorted. You can do it to the good'ol 3300s or 3700 GPs.

Current IB cells like to 4200s will die soon after....
Ben.C is offline  
Old 01-18-2007, 08:59 PM
  #9  
Tech Addict
 
eforer's Avatar
 
Join Date: Sep 2004
Location: Rhode Island
Posts: 607
Default

GP cells work great after being stored deadshorted. In fact dead shorting was a virtual necessity with those cells to be fast in stock.
eforer is offline  
Old 01-18-2007, 10:53 PM
  #10  
Tech Master
 
Join Date: Aug 2001
Posts: 1,152
Default

Originally Posted by eforer
GP cells work great after being stored deadshorted. In fact dead shorting was a virtual necessity with those cells to be fast in stock.
But unfortunately for our friend here, the cells he bought from the guy are IBs.
Ben.C is offline  
Old 01-18-2007, 11:33 PM
  #11  
Tech Elite
iTrader: (5)
 
Yeti35's Avatar
 
Join Date: Sep 2004
Location: SL, UT
Posts: 2,804
Trader Rating: 5 (100%+)
Default

Originally Posted by Ben.C
But unfortunately for our friend here, the cells he bought from the guy are IBs.
He has got one 37 GP and one 38 IB so he has a mix.
Yeti35 is offline  
Old 01-19-2007, 08:13 AM
  #12  
Tech Rookie
Thread Starter
 
Join Date: Dec 2006
Posts: 14
Default

Yep one is 3700 GP, I got them from a HS/Indoor carpet track so I don't think they sat for too long. They must be no good for racing anymore since he was getting rid of them but he said they should be good for what I am doing with them (backyard dirt track bashing).

I will be testing them out later today to find out if they are any good.

Thanks for the responses.
Shrike is offline  
Old 01-19-2007, 08:57 PM
  #13  
Tech Lord
iTrader: (22)
 
UN4RACING's Avatar
 
Join Date: Oct 2006
Location: MODIFIED!
Posts: 13,140
Trader Rating: 22 (100%+)
Default

I was tought when taking the wire off after shorting let them sit for alittle bit before charging. I used to let mine sit 30 min.
UN4RACING 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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.