R/C Tech Forums

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

Thread Tools Search this Thread
Old 05-02-2008, 11:18 AM   #1
Tech Rookie
Join Date: Feb 2008
Posts: 11
Default Erratic batteries

I bought some used batteries about a month ago, see them here...


They seem to work erratically. I have two different chargers but they don't charge well on either. After a couple of cycles now, they don't hold a charge well at all.

They were assembled except for wire. I soldered deans & 12 gauge wire on (the wire is from Lowes... I couldn't get ahold of any of the noodling deans wire).

We have some GP3300's that are still working well. What am I doing wrong? Did I buy bad batteries? Is it the wire? The charger I bought with them, a Duratrax Intellipeak Digital, doesn't seem to work now, either (it did at first). The charger status light comes on, but won't go into a charge mode. I use only DC, not the AC adapter.

Thanks in advance for any advice.

windsurf17 is offline   Reply With Quote
Old 05-02-2008, 11:42 AM   #2
Tech Champion
Jason Pelletier's Avatar
Join Date: Jul 2007
Location: New York
Posts: 8,820
Trader Rating: 33 (100%+)

I wouldn't buy used battery's anymore on here. The are fragile and can be easily mistreated.

What charger are u useing.
Island Raceway & Hobby
Jason Pelletier is offline   Reply With Quote
Old 05-02-2008, 01:57 PM   #3
Tech Master
Join Date: Sep 2007
Posts: 1,644
Trader Rating: 67 (100%+)

Find someone with a CE Turbo Charger and Novak Discharge Tray. Have then cycled and see what numbers you get on the turbo. High resistance probably means they are bad. If you can find someone to cycle them individually and you can find enough good ones to make a pack or so; it might we worth the work. However they must be unsoldered and the ends cleaned for a cycler to work correctly.
nutz4rcyktw is offline   Reply With Quote
Old 05-02-2008, 05:42 PM   #4
Super Moderator
tmail55's Avatar
Join Date: Oct 2005
Location: Sunny Florida!!!!!
Posts: 3,279
Trader Rating: 61 (100%+)

Had <<<< HAD 5 4200IB packs, now have two!!!!

Seems the IB4200 (some of them) don't last long!!!

Have two IB3800 packs and they are still good!!!!

Going lipo a$ $oon a$ I get the $$$$$$$$$
Rev. Terrance / Team HOLY Rollers / R/C Tech > R/C Racers 4 Christ
Petit RC / RC WISH / RCTen.com #WeAreAE
I believe the word of God for what it says, not what people want it to say!
RC10GT2-E, SC5M, RC10T2, Spec-R S2, FX10
tmail55 is offline   Reply With Quote
Old 05-02-2008, 05:55 PM   #5
Tech Master
Join Date: Sep 2007
Posts: 1,644
Trader Rating: 67 (100%+)

Some series of 4200s were bad. Many have exploded. I have seen three at my track. I bought 8 packs and within a month only two were dependable. I gave them to a guy who couldn't afford much and said if the local guy who did matching could make something out of them, he could keep whatever he was able to restore and match. I think he ended up with 3 decent packs.
nutz4rcyktw is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
FT GT2 RTR, Ofna starter box w/ batteries, Dynamite Vision Peak w/ batteries phayes526 R/C Items: For Sale/Trade 8 07-15-2008 12:35 PM
COLT 10, INTELLECT matched batteries, 1/8 shell, receiver batteries and blinged 350Z blueGiga Australia For Sale/Trade 3 06-16-2008 07:59 PM
Erratic servo behaviour. kytan Malaysian R/C Racers 19 01-16-2007 08:43 AM
Fs 2 7cell mini t intellect 1200 batteries, blind batteries t to the maxx2 R/C Items: For Sale/Trade 0 03-05-2006 04:33 PM
fukuyama batteries/ trinity batteries 20-50 dollars a piece. jackfast R/C Items: For Sale/Trade 10 02-22-2005 06:37 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 06:17 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net