R/C Tech Forums

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

Thread Tools Search this Thread
Old 01-27-2003, 07:06 AM   #1
Tech Adept
warlord385's Avatar
Join Date: May 2002
Posts: 237
Default battery short?

I accidently touched the batteries together when i was putting then in my car. It made a pop noise. It was very brief. Are my batteries still Okay?
warlord385 is offline   Reply With Quote
Old 01-27-2003, 12:30 PM   #2
Tech Initiate
Join Date: Nov 2002
Location: SF Bay Area
Posts: 42

Probably your pack is fine. But without testing that's a firm maybe.

Check each cell for voltage across the individual cell.

Cycle it and make sure it's charge / discharge time is normal. If there is a reversed or shorted cell, you'll lose voltage and runtime. For instance I had an OLD 1700 SCR pack that had a shorted cell that I didn't realize, I was only getting ~1400 Mah from and average voltage was down quite a bit, not a full 1.2v, but significantly. When I removed the bad cell and made a 4 cell pack with the rest, it came right back to ~1750 Mah at the same discharge rate with voltage right where you'd expect it to be.

You can just use a normal digital multimeter to test for a dead cell, check each cell individually, and it will show no voltage difference across it if it's dead. For cycling just time discharge from full and compare it with a similarly rated pack, if a cell is gone, you will notice a significant difference.

Last edited by Concillian; 01-27-2003 at 08:28 PM.
Concillian is offline   Reply With Quote
Old 01-27-2003, 07:26 PM   #3
Tech Elite
Neil Rabara's Avatar
Join Date: Jul 2002
Location: Lone Star
Posts: 4,821

The pack should be fine if any of the cells did not vent. You will definitely know if a cell or pack vents. The shrink wrap melts and it makes an terrible hissing sound, like it is ready to explode. If it didn't vent, discharge the pack on a discharge tray, let them cool on a fan, then cycle them.
Neil Rabara is offline   Reply With Quote
Old 01-27-2003, 07:59 PM   #4
Tech Master
imataquito's Avatar
Join Date: Aug 2001
Location: Malaysia
Posts: 1,279
Send a message via ICQ to imataquito Send a message via Yahoo to imataquito

what if it did ? what happens?
imataquito is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Short vid of my MGT savagebeaster Monster Trucks 3 07-31-2006 02:35 PM
Battery "Shelf-Short" Question lost Electric On-Road 10 12-07-2005 12:05 AM
Short arm design. RCknight Electric On-Road 2 08-01-2005 07:46 PM
Josh Short Ballistik Buyer/Seller dispute and Feedback discussion forum 0 02-11-2005 03:34 PM
Long arm, short arm, what's different ttso Nitro On-Road 4 11-14-2004 08:04 PM

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 10:25 AM.

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

SEO by vBSEO 3.5.0