Electric General Discussion General Discussion forum about rc electric related aircraft, accessories, flight, tips, etc.

Problem with Lipo batteries

Reply
Old 10-28-2012, 12:14 PM
  #1
SAMCPAKISTAN
Thread Starter
 
SAMCPAKISTAN's Avatar
 
Join Date: Feb 2012
Location: Islamabad, PAKISTAN
Posts: 24
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Problem with Lipo batteries

Hi everyone, we are having problem in 3 Cell & 4Cell lipo batteries, their one cell went under voltage 1.5v & 2.1v. we are using IMax B-6 Ac pro charger. Please provide us some suggestion to solve the issue.
Expert advice will be highly appreciated.
Thanks,
SAMCPAKISTAN is offline  
Reply With Quote
Old 10-28-2012, 12:38 PM
  #2
guver
 
Join Date: Mar 2003
Location: LaGrange, OH
Posts: 14,857
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Problem with Lipo batteries

End flight sooner and as a back-up plan set a LVC on the ESC.
guver is offline  
Reply With Quote
Old 10-28-2012, 06:15 PM
  #3
blvdbuzzard
 
Join Date: Jun 2002
Location: high deserts, CA
Posts: 3,645
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Problem with Lipo batteries

If the charger will even do a balance charge, try that. If the charger will cycle the battery, start with a balance discharge, then a balance recharge. Some charges will not even start when the batteries are to far out of voltage.

Buzz.
blvdbuzzard is offline  
Reply With Quote
Old 10-29-2012, 02:58 AM
  #4
cubaneight
 
Join Date: Apr 2004
Location: Colchester, UNITED KINGDOM
Posts: 114
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Problem with Lipo batteries

Once a li-po cell gets to such a low state of discharge, there's really nothing that can be done to get it back to anything like new. Cells can be recovered to a degree (I've done it!) but it's potentially dangerous as a fire is possible if great care is not taken. I managed to get the cells to take a charge by forced charging, but their resulting poor capacity and high internal resistance made the cell next to useless. li-pos are pretty cheap these days so throw out the damaged ones and take extra care of replacements.

C8
cubaneight is offline  
Reply With Quote
Old 10-30-2012, 07:15 AM
  #5
subzJC
 
Join Date: Jan 2006
Location: Knoxville, TN
Posts: 35
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Problem with Lipo batteries

Are you testing the cells individually with a meter or are you going by what the charger reads?
Occasionally I will get a cell reading low due to poor connections either on the balance board
or where the balance board plugs into the charger. Makes me wonder when you say your having problems in both a 3 and 4 cell batt.
subzJC is offline  
Reply With Quote
Old 10-30-2012, 12:39 PM
  #6
SAMCPAKISTAN
Thread Starter
 
SAMCPAKISTAN's Avatar
 
Join Date: Feb 2012
Location: Islamabad, PAKISTAN
Posts: 24
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Problem with Lipo batteries

Dear, Thanks for reply. we have checked the connectors & those are ok. but having the problem as it is.
We have tried to avail charging by using NIXX setting, but result is zero.
SAMCPAKISTAN is offline  
Reply With Quote
Old 10-31-2012, 05:42 AM
  #7
Tluu
 
Join Date: Nov 2010
Location: Katy, TX
Posts: 47
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Problem with Lipo batteries


Quote:
ORIGINAL: blvdbuzzard

If the charger will even do a balance charge, try that. If the charger will cycle the battery, start with a balance discharge, then a balance recharge. Some charges will not even start when the batteries are to far out of voltage.

Buzz.
+1
Tluu is offline  
Reply With Quote
Old 12-23-2016, 09:52 AM
  #8
SAMCPAKISTAN
Thread Starter
 
SAMCPAKISTAN's Avatar
 
Join Date: Feb 2012
Location: Islamabad, PAKISTAN
Posts: 24
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Quote:
Originally Posted by subzJC View Post
Are you testing the cells individually with a meter or are you going by what the charger reads?
Occasionally I will get a cell reading low due to poor connections either on the balance board
or where the balance board plugs into the charger. Makes me wonder when you say your having problems in both a 3 and 4 cell batt.
Dear, I use Lipo meter to check the voltage of cells, the meter is suitable for up to 6 cell with individual cell voltage.
SAMCPAKISTAN is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 12:03 AM.