R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-19-2003, 05:35 PM   #1
Tech Master
 
berger's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2003
Location: Bathurst, Australia
Posts: 1,149
Trader Rating: 1 (100%+)
Default Battery Values Question

I just ran a reverse pulse charge through on one of my 6 year old sets of trinity 2000's on my novak millenium charger and it gave me these values;
10.62V 1884seconds 2617mAH to me that seems a little high i was giving them 5.0A and using the recommended voltage cutoff threshold.
Comments/explaination please
berger is offline   Reply With Quote
Old 09-19-2003, 07:02 PM   #2
Tech Fanatic
 
Join Date: Apr 2003
Location: Austin, Texas
Posts: 974
Trader Rating: 1 (100%+)
Send a message via AIM to Johnnytc3
Default

Those are very Nice High Resistance Batteries!!
Johnnytc3 is offline   Reply With Quote
Old 09-19-2003, 10:35 PM   #3
Tech Addict
 
Join Date: Mar 2002
Location: Socal
Posts: 613
Default

Ya those things look dead Maybe a good cycle or just practice packs.
teamAE is offline   Reply With Quote
Old 09-20-2003, 01:33 AM   #4
Tech Master
 
berger's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2003
Location: Bathurst, Australia
Posts: 1,149
Trader Rating: 1 (100%+)
Default

Why do they look dead, admittedly they are a few years old (read 7) but ive looked after then, they took ages to charge due to reverse pulse charging.
berger is offline   Reply With Quote
Old 09-20-2003, 03:55 AM   #5
Tech Elite
 
sosidge's Avatar
 
Join Date: Dec 2001
Location: Bristol, UK
Posts: 3,865
Default

The reverse pulse charge could give a misledaing capacity rating on charge, because it also includes a small amount of discharge as part of the cycle.

The high peak voltage level indicates a battery with high internal resistance, which means it will have less punch on the track.
sosidge is offline   Reply With Quote
Old 09-20-2003, 01:15 PM   #6
Tech Master
 
berger's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2003
Location: Bathurst, Australia
Posts: 1,149
Trader Rating: 1 (100%+)
Default

Okay, can someone give me some "good" values that i would be looking at for a linear charge at 5.0A. I thought that the higher the voltage the better as it gave more punch for racing stock, you guys have told me the opposite. :-/
berger is offline   Reply With Quote
Old 09-21-2003, 12:44 AM   #7
Super Moderator
 
Grizzbob's Avatar
 
Join Date: Feb 2002
Location: Sand Springs, OK
Posts: 3,063
Trader Rating: 2 (100%+)
Default

Lately, the better packs I've seen are showing around 9.0-9.3 volts at peak(that's at 5 amps, it can be a tick higher at higher charge rates). When you see the peak voltage topping 10, that generally means that the pack's internal resistance has gone up considerably, so while it's early voltage may be ok, it'll drop off FAST, & heat up more than one with lower resistance, & at that point, I usually relegate that pack to practice duty.....
__________________
Bob Seay
Tamiya TRF417, TA05v.2, TRF211XM, M-05ver.2R, XRAY X12, Associated B5m Factory Lite

Go Pokes!!!
Grizzbob is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
battery question downunder23 Rookie Zone 1 04-21-2006 02:41 AM
This is gonna sound stupid question but I have a battery Question. Smoke21 Electric On-Road 7 04-25-2004 09:10 PM
capacitor values bigjhoov Electric On-Road 0 04-07-2004 11:16 PM
indi charger question/3300mhz battery question TT_Vert Electric Off-Road 4 12-27-2003 12:46 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 11:04 AM.


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