R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 03-29-2008, 01:57 AM   #1
Tech Adept
 
Jamesalex's Avatar
 
Join Date: Oct 2007
Posts: 185
Questions?? lipo charging on an overloader

Hi, first sorry if I have put this in the wrong section, I thought I seen an overloader thread the other week but cant seem to find it now,so here goes.

I am looking to be running lipos such as 3200 trackpowers and was wondering what are the best settings to set the Overloader charger to for lipos.

volts, amps,cutoff dis,temp etc and anything else that appears on the overloader screen.

Regards

James
Jamesalex is offline   Reply With Quote
Old 03-29-2008, 02:56 AM   #2
Tech Elite
 
UK.hardcore's Avatar
 
Join Date: Aug 2007
Location: Belgium.
Posts: 2,137
Default

LIPO setting on 7.4V for 2 cell packs, capaticity on 3200 for a 3200, 4900 for 4900, ...

Then charge current keep going up till it stops, it normally doesnt want to go over 1C (if yours does DONT), 4900mah= 4.9amps, 3200mah=3.2amps, ...

I always use my Trakpower balancer between the charger and the pack, its needed.

discharge, if you do that set the voltage cut-off to 3.0V per cell or HIGHER.

You can discharge LIPO with the Overloader at 2C, 4900mah= 9.8amps, 3200mah= 6.4amps, ...

Be sure to monitor while charging/discharging and double check settings.

Now LIPO users may wonder why discharge lipo, i do that once in a while as i think that balancing in 2 directions may be better still, ie. discharge/charge.
__________________
A racecar is only as good as the mechanic who build it.
UK.hardcore is offline   Reply With Quote
Old 03-29-2008, 02:58 AM   #3
Tech Addict
 
Join Date: Feb 2007
Posts: 596
Default

Hi,
The first thing you need to make sure of is that the charging mode is set to Lipo (CC/CV) and not Nimh (Delta Peak).

Then you set the capacity to be whatever your battery is, and the amp rate at 1C. That's 3.2amps for your 3200 trakpower, or 4.9 for the 4900 one.

There's never a need to discharge a lipo on a charger as you don't need to cycle them like NiMH batteries.

As for temp, I don't have the figure to hand right now, but mine don't get hot at all when charging, I'll double check it and post an update unless someone comes along before

Cheers
Chris
__________________
CPD Racing
chris_dono is offline   Reply With Quote
Old 03-29-2008, 03:29 AM   #4
Tech Elite
 
UK.hardcore's Avatar
 
Join Date: Aug 2007
Location: Belgium.
Posts: 2,137
Default

Quote:
Originally Posted by chris_dono View Post
Hi,
There's never a need to discharge a lipo on a charger as you don't need to cycle them like NiMH batteries.
Its good if you need to see there real capacity tough, run them down to 6.0V at 0.5C or so, then charge and when done you see the full capacity, or is that my not logical way of monitoring performance?

Quote:
Originally Posted by chris_dono View Post
As for temp, I don't have the figure to hand right now, but mine don't get hot at all when charging, I'll double check it and post an update unless someone comes along before

Cheers
Chris
LIPO may NEVER EXCEED 60C, but they normally cool when charging as that is one of the big advantages with LIPO.
__________________
A racecar is only as good as the mechanic who build it.
UK.hardcore is offline   Reply With Quote
Old 03-29-2008, 04:18 AM   #5
Tech Adept
 
Jamesalex's Avatar
 
Join Date: Oct 2007
Posts: 185
Default

Thanks for the reply guys that is spot on the info I needed.

Thank You again

James
Jamesalex is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
LiPo charging HELP!!!! BCUZICN Electric On-Road 1 07-02-2008 12:27 PM
lipo charging chad220 Radio and Electronics 5 02-20-2008 11:33 AM
lipo charging? civiceg Electric On-Road 7 04-09-2007 01:35 AM
LiPo charging help. please!! myk505 Electric On-Road 6 03-19-2007 05:05 PM
Charging GP1100 with robitronic overloader al1_be Electric On-Road 1 09-30-2005 08:20 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 08:11 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