R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 12-08-2007, 06:49 PM   #1381
Tech Master
 
Join Date: Mar 2004
Location: Earth
Posts: 1,039
Send a message via ICQ to rcnewb2004
Default

Thank you Quante,

That is some good information there, and has confirmed my observations a while back about step charging.

For example if you charge
1st step: 0-->2500mah with 6.0A
2nd step:2500-->2600mah with 0.1A
3rd step:2600-->Finish with 5.0A

The charger not only takes time to increase to the desired number of amps, from 1st step to 2nd step, it also takes time to decrease to the desired number of amps, therefore, while the charger is slowly lowering the current, (from 6.0A --> 0.1A), the mah going into the pack has already exceeded 100mAh! (exited the second step before going into it) on another charger this could take 5 minutes... on this charger.. 30 seconds...

no one seemed to give a sh*t or an explanation when i posted it, hopefully, if you bring this up with Erik, you will get a good answer.

If you have time, please ask him when the next update will happen. This charger still needs a lot of updating.

I am wondering what do you mean by the "Delta peak cutoff also works like a charm" on the external output? (Sorry i was wondering if there was sarcasm there...)

My charger (when the soldering posts were slightly de-soldered) were reading 1 cell had 4.36V. So i had to take apart the charger to fix it.
__________________
Ta04-TRF, EVO 5
Futaba
KO Propo
Spintec
rcnewb2004 is offline   Reply With Quote
Old 12-09-2007, 04:18 AM   #1382
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by rcnewb2004 View Post
Thank you Quante,

That is some good information there, and has confirmed my observations a while back about step charging.

For example if you charge
1st step: 0-->2500mah with 6.0A
2nd step:2500-->2600mah with 0.1A
3rd step:2600-->Finish with 5.0A

The charger not only takes time to increase to the desired number of amps, from 1st step to 2nd step, it also takes time to decrease to the desired number of amps, therefore, while the charger is slowly lowering the current, (from 6.0A --> 0.1A), the mah going into the pack has already exceeded 100mAh! (exited the second step before going into it) on another charger this could take 5 minutes... on this charger.. 30 seconds...

no one seemed to give a sh*t or an explanation when i posted it, hopefully, if you bring this up with Erik, you will get a good answer.

If you have time, please ask him when the next update will happen. This charger still needs a lot of updating.

I am wondering what do you mean by the "Delta peak cutoff also works like a charm" on the external output? (Sorry i was wondering if there was sarcasm there...)

My charger (when the soldering posts were slightly de-soldered) were reading 1 cell had 4.36V. So i had to take apart the charger to fix it.
* No sarcasm intended the deltapeak works well (measured temp with my robitronics overloader, cutoff at a nice 43C

* When I have some time this week I'm gonna see if this also happens within the tray, I'd like to know if I charge with 4.5A or 6.5A!

* With me its definately not a soldering post because during charging it measures ok. If you have a bad soldering post, then idd the charger will read higher because of the added resistance over the soldering joint.
-> what strikes me as odd is that I expected the charger to measure the voltage seperately over the sensor wires I see soldered to the posts. If it measured wrong when a post is soldered bad then this is definately not true and voltage is not measured seperately! (which could explain my bad voltage measurement with a bad FET)
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 12-09-2007, 04:37 AM   #1383
Tech Master
 
Join Date: Mar 2004
Location: Earth
Posts: 1,039
Send a message via ICQ to rcnewb2004
Default

This is just me getting a bit confused here... but you checked the delta peak cut-off with temperature? Is that a "good" way to go about it? (I am sorry, i am new at this...) it just doesn't feel right to check delta peak cutoff with temperature... aren't there other variables to consider?

Good luck w/ your FET problem...
__________________
Ta04-TRF, EVO 5
Futaba
KO Propo
Spintec
rcnewb2004 is offline   Reply With Quote
Old 12-09-2007, 05:10 AM   #1384
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by rcnewb2004 View Post
This is just me getting a bit confused here... but you checked the delta peak cut-off with temperature? Is that a "good" way to go about it? (I am sorry, i am new at this...) it just doesn't feel right to check delta peak cutoff with temperature... aren't there other variables to consider?

Good luck w/ your FET problem...
It gives a pretty good indication if the delta peak works correctly. Since I dont have an oscilloscoop at home I dont have another way to check this (I could be staring at my multimeter but that would take way too long.
If the pack stops charging with DP set to 20mV at 43C, I'm pretty happy.
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 12-17-2007, 04:23 AM   #1385
Tech Rookie
 
Join Date: Feb 2006
Posts: 19
Default

I have been using this charger for a few weeks now charging IB4200 at five amps using 0.5 and 1 MV delta peak and cannot get my packs to Delta Peak
they all seem to Temp cut????
Am I right in saying the Higher the delta peak MV the hotter your packs will get?? or have I got it the wrong way around?
Should I put cooling fans above the charger tray?
Help!!!
gaza121 is offline   Reply With Quote
Old 12-17-2007, 05:12 AM   #1386
Tech Addict
 
Join Date: Dec 2005
Location: Belgium
Posts: 528
Trader Rating: 6 (100%+)
Default

Yes, the higher the delta peak, the higher the temperature will be before they peak. Atm my settings for EP4200's are: 3mV delta peak, 47 degrees Celsius.

If you set 43 they will temp cutoff every time. Not that its that bad, it'll prolly be a 30mAh difference or so between 43 and delta peak.
__________________
Make it idiot-proof, and someone will make a better idiot.
Quante is offline   Reply With Quote
Old 12-17-2007, 06:02 AM   #1387
Tech Master
 
Join Date: Mar 2004
Location: Earth
Posts: 1,039
Send a message via ICQ to rcnewb2004
Default

Yes, but the temp cutoff should basically be used only as a safety feature (from what I have read here)... As long as the delta-peak cutoff is set at a reasonable level, everything should be alright.
__________________
Ta04-TRF, EVO 5
Futaba
KO Propo
Spintec
rcnewb2004 is offline   Reply With Quote
Old 12-17-2007, 07:22 AM   #1388
Tech Addict
 
radio_car_racer's Avatar
 
Join Date: Apr 2004
Posts: 543
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by gaza121 View Post
I have been using this charger for a few weeks now charging IB4200 at five amps using 0.5 and 1 MV delta peak and cannot get my packs to Delta Peak
they all seem to Temp cut????
Am I right in saying the Higher the delta peak MV the hotter your packs will get?? or have I got it the wrong way around?
Should I put cooling fans above the charger tray?
Help!!!
been using 1mv/2mv & 60c @ 5a / all cells are peaking not tempimg

300s & 30c lockouts

you need good cells to use a low mv setting

tray your cells 1st

In the UK we are using a fan on the left side of the heat sink. Don't let it blow into the cell tray as it'll affect the temp cut-off
radio_car_racer is offline   Reply With Quote
Old 01-03-2008, 06:14 PM   #1389
Tech Rookie
 
Join Date: Jan 2008
Posts: 4
Default Charger settings for cells

Does anyone have settings to charge the following cells:

EP 4500
Ener G 4600

Any help would be appreciated I just got a Spintec charger so I want to make sure the settings are right.

Thanks
akonto2000 is offline   Reply With Quote
Old 01-05-2008, 12:09 AM   #1390
Tech Elite
 
Join Date: Oct 2005
Location: St. Louis
Posts: 2,299
Trader Rating: 33 (100%+)
Default

Why is it that when I charge 6 cells I can charge up to 8 amps, but when I charge 4 cells it only charges at 6??
chensleyrc1 is offline   Reply With Quote
Old 01-05-2008, 04:57 AM   #1391
Tech Rookie
 
Join Date: Jan 2008
Posts: 4
Default EP 4200 Capacity

I set the charger as follows:

Delta Peak = 3.0mV
Temp= 47 oC
Min Capacity = 0
Max Capacity = 6000 (Does anyone change these settings?)
Current = 5.6amps

I ended up turning off the pack because the temp on the middle cells was
116F and the cells took more than 4700 mamps. What have others seen in total mamps taken by the EP 4200 before they delta peak?
akonto2000 is offline   Reply With Quote
Old 01-05-2008, 05:45 AM   #1392
CFR
Tech Regular
 
CFR's Avatar
 
Join Date: May 2007
Posts: 327
Default

Quote:
Originally Posted by akonto2000 View Post
I set the charger as follows:

Delta Peak = 3.0mV
Temp= 47 oC
Min Capacity = 0
Max Capacity = 6000 (Does anyone change these settings?)
Current = 5.6amps

I ended up turning off the pack because the temp on the middle cells was
116F and the cells took more than 4700 mamps. What have others seen in total mamps taken by the EP 4200 before they delta peak?
Max Capacity = 6000 (Does anyone change these settings?) Yes

you can turn it down so that it limits what the charger will put into the cells and use it as a safety feature

Quote:
and the cells took more than 4700 mamps
try these settings if your cells are in good order

0.01mv
60c temp (f = ???)
5000mah

temp or mah settings will stop charge if mv doesn't

my cells all stop on mv setting using the above, some do get upto 50c + though
CFR is offline   Reply With Quote
Old 01-05-2008, 07:32 PM   #1393
Tech Adept
 
B&B Racing's Avatar
 
Join Date: Jan 2006
Location: Midwest
Posts: 182
Trader Rating: 2 (100%+)
Send a message via AIM to B&B Racing
Default

I have seen really good IB 4200 cells take in 5200 before peaking. I'm afraid that the EP 4600 cells that we are getting might push the 6000 limit.

djb
__________________
Sponsered by BJ & Z Hobbies.
B&B Racing is offline   Reply With Quote
Old 01-05-2008, 08:42 PM   #1394
Tech Fanatic
 
Join Date: Oct 2003
Location: downunder
Posts: 814
Trader Rating: 22 (100%+)
Default

I have had many IB 4200 take in 5500mah+ had one cell take 6000mah
bjspinner is offline   Reply With Quote
Old 01-28-2008, 01:38 AM   #1395
SH
Tech Addict
 
Join Date: Oct 2007
Location: NSW AUS
Posts: 700
Trader Rating: 18 (100%+)
Default

Well what's happening? how are people liking their ICC's?
SH is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spintec ICC Charger MDawson R/C Items: For Sale/Trade 1 01-29-2008 09:05 AM
Spintec ICC charger ioxqq R/C Items: For Sale/Trade 2 07-15-2007 10:53 AM
Spintec ICC charger Dusty Kemp R/C Items: For Sale/Trade 1 10-27-2006 06:33 AM
Spintec Charger Nuno Gancho Electric On-Road 3 07-21-2006 04:32 AM



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 12:09 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