RC-Monster Forums  

Go Back   RC-Monster Forums > Support Forums > General Electric

Reply
 
Thread Tools Rate Thread Display Modes
6s Lipo Pack - bad cell question
Old
  (#1)
cowbell
Guest
 
Posts: n/a
6s Lipo Pack - bad cell question - 10.10.2010, 12:26 PM

I have a Turnigy 5000mah 6s I use in my electric Losi Aftershock. After a run last night, the battery itself was up to 134 degrees and the outer cells puffed out.

I let it cool down and after about an hour, the pack was back down to normal size. This morning, I hooked it up to my Accucel-6 charger to set the cells to storage. The charger only identified 5 cells, so I decided to not try to charge anything. I checked for loose wires and bad solder but found nothing.

My question is, is there a good way to identify which cell is bad and remove it, or should I just chuck the whole lipo pack?
   
Reply With Quote
Old
  (#2)
Bondonutz
Fat Kid Engineering
 
Bondonutz's Avatar
 
Offline
Posts: 3,634
Join Date: Jun 2009
Location: Hot as Hell West Central Coast Florida
10.10.2010, 12:41 PM

If you have a volt meter check individual cell voltage first, I've had many balance tabs go bad. My only real complaint w/HC packs, shizzy balance tabs and wires.

If the one cell is def showing no signs of life carefully remove the shrink wrap and tape and inspect the board, sometimes with excessive heat the little "circut breaker" of solder may melt and cause this problem.

Worst case scenaro you can remove the dead cell reconfigure the balance and + & -main wires and install a 5s balance tab.


I retired from RC, now life is all about guns and long range shooting.
   
Reply With Quote
Old
  (#3)
pinkpanda3310
RC-Monster Titanium
 
pinkpanda3310's Avatar
 
Offline
Posts: 1,152
Join Date: Sep 2008
10.10.2010, 07:24 PM

I don't know that charger but my cheap charger sometimes checks the battery and says it is 1 cell less than it really is. That's because it is checking the overall voltage of the pack. If you check the cells with a voltmeter as Bondo said and they all have voltage, give it a slow charge (without balance) to get the voltage high enough for the charger to recognise 6s. Then put it on balance charge.

If one cell is dead or dangeroursly low then don't do this.
   
Reply With Quote
Reply


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 On

Forum Jump







Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
vBulletin Skin developed by: vBStyles.com