Wattflyer RC Network: RC Universe :: RCU Magazine :: RCU Forums :: RCU Classifieds :: RCU User Reviews :: RCU YouTube
Home Who's Online Calendar Today's Posts RealTime Post Spy Mark Forums Read
Go Back   WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > General Electric Discussions
Register Members List Wattflyer Extras Articles Search Today's Posts Mark Forums Read Social Groups

General Electric Discussions Talk about topics related to e-powered RC flying

Thank you for your support (hide ads)
Reply
 
Thread Tools Display Modes
Old 06-20-2014, 10:06 PM   #1
garyp1029
Member
 
Join Date: Mar 2014
Posts: 90
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default Discharge Rate

I have a ICharger 106b which has both a discharge and a storage function. Is it safe to discharge at the same rate--3.3A?--that I use to charge my 3s 3300 mah batteries? Or should the discharge rate be less than 3.3? I am aiming for a final storage voltage of 3.8. Thanks. Gary
garyp1029 is offline  
  Reply With Quote
Old 06-20-2014, 10:10 PM   #2
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 2,318
Thanked 232 Times in 223 Posts
iTrader: (0)
Friends: (1)
Default

You can always discharge a pack faster then you can charge.

Within the limits of the charger... you could discharge at C rating * capacity
fhhuber is online now  
  Reply With Quote
Old 06-21-2014, 01:10 AM   #3
dereckbc
Member
 
Join Date: Jun 2013
Posts: 367
Thanked 12 Times in 12 Posts
iTrader: (0)
Friends: (3)
Default

Discharge as high as you want. I have the 1010B+ and not sure about the 106, but my 1010B on a 3S pack will not do more than 2 amps on Discharge.
dereckbc is offline  
  Reply With Quote
Old 06-21-2014, 03:31 AM   #4
garyp1029
Member
 
Join Date: Mar 2014
Posts: 90
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default

Interesting. I tried to discharge my 3s 3300 at 3A, and the discharge rate on my 106b automatically and instantly dropped to 1.2A. This happened on both the "discharge" and the "storage" functions. I guess 1.2A is the max.
garyp1029 is offline  
  Reply With Quote
Old 06-21-2014, 04:37 AM   #5
dereckbc
Member
 
Join Date: Jun 2013
Posts: 367
Thanked 12 Times in 12 Posts
iTrader: (0)
Friends: (3)
Default

Yeah with Ichaarger the amount of power they can burn off is fairly small. On my 1010B 20 watts is about all I get in a 3S pack which is roughly 1.7 to 1.8 amps maximum. Not sure what the 106 limit is but it sounds like around 10 to 15 watts.

On the 1010 you can increase it by using an external power resistor to get up to 7 amps max. For me that is a 1.5 Ohm 75 watt resistor. Down side is it only works in one discharge mode called Dich+. Won't work on storage.
dereckbc is offline  
  Reply With Quote
Old 06-21-2014, 09:28 AM   #6
JetPlaneFlyer
Super Contributor
 
JetPlaneFlyer's Avatar
 
Join Date: Mar 2009
Location: Aberdeen, Scotland
Posts: 4,511
Thanked 495 Times in 461 Posts
Awards Showcase

5kW  Outstanding Contributor Award  1kW 
iTrader: (0)
Friends: (8)
Default

Originally Posted by garyp1029 View Post
Interesting. I tried to discharge my 3s 3300 at 3A, and the discharge rate on my 106b automatically and instantly dropped to 1.2A. This happened on both the "discharge" and the "storage" functions. I guess 1.2A is the max.
As noted above, discharge is limited by both amp limit and power limit. For anything other than single or two cell batteries it's usually the discharge power limit that is the deciding factor. The 106b has a 20W power limit which should allow a 3s battery to discharge at around 1.6A. The discharge power is adjustable in the software so you might want to check that it's set at the full 20W rating.

If faster discharging is something that you want from your charger you need to look for the discharge power rating in the spec. Generally though you need to get a high end charger to get decent discharge power rating.
JetPlaneFlyer is online now  
  Reply With Quote
Old 06-21-2014, 01:05 PM   #7
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 2,318
Thanked 232 Times in 223 Posts
iTrader: (0)
Friends: (1)
Default

And... usually the best (fastest and most fun) way to do a discharge is to fly the plane
Then plug the battery in and select storage charge...

Or you can tie the tail of the plane to a fence post and run the motor. (not as much fun as flying... but faster than the discharge of most chargers)
fhhuber is online now  
  Reply With Quote
Old 06-21-2014, 06:40 PM   #8
ron_van_sommeren
homo ludens modelisticus
 
ron_van_sommeren's Avatar
 
Join Date: Jul 2005
Location: near Nijmegen, Netherlands
Posts: 730
Thanked 147 Times in 126 Posts
Club: www.rmvc-cumulus.nl
iTrader: (0)
Friends: (0)
Default

Charge/discharge rates as a function of #cells
www.scriptasylum.com
-> RC calculations
-> electrical
-> Lithium battery chargers
and
-> Charger required power calculator

The other menu items and demos are also veeeeery handy/instructive for e-folk, add site to your favourites?

ron_van_sommeren is offline  
  Reply With Quote
Reply

  WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > General Electric Discussions

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
C Discharge???? garyp1029 General Electric Discussions 36 04-21-2014 05:51 AM
Discharge down a LiPo pack solentlife Batteries & Chargers 164 11-14-2013 08:29 AM
not so easy ...cellpro powerlab 6 setup tobydogs Batteries & Chargers 24 07-29-2012 04:29 AM
Cycling Sanyo Eneloop NiMh batteries Turbine Batteries & Chargers 12 02-22-2012 06:47 PM
How far to discharge LiPo's JetPlaneFlyer Power Systems 14 07-29-2011 07:11 PM


All times are GMT +1. The time now is 04:06 PM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Charities we support Select: Yorkie Rescue  ::  Crohn's & Colitis Foundation



Page generated in 0.21057 seconds with 35 queries