Battery setup - WattFlyer RC Electric Flight Forums - Discuss radio control eflight

Warbird Electrics Discuss e-powered warbirds in here!

Battery setup

Old 11-17-2015, 09:19 PM
  #1  
70sflyer
Member
Thread Starter
 
Join Date: Nov 2010
Location: Atkins Iowa
Posts: 104
Default Battery setup

Building the hanger 9 blue nose 60.Motor is e-flight 90,ESC is CC 100.I have 2 A123 batterys I would like to use.4600mah,3S2P.Im not sure if I should hook them up parallel or series. Looking more for longer time flights.Thanks for any help.
70sflyer is offline  
Old 11-17-2015, 10:51 PM
  #2  
Flubber
Member
 
Flubber's Avatar
 
Join Date: Aug 2007
Posts: 223
Default

Those packs will have to be in series for a 325Kv motor.
Flubber is offline  
Old 11-18-2015, 02:31 AM
  #3  
Turner
Super Contributor
 
Turner's Avatar
 
Join Date: Sep 2009
Location: Tallahassee, FL
Posts: 1,533
Default

I think you will need more cells. Have a look at this thread. Maybe Dennis will chime in and help you out.

http://www.wattflyer.com/forums/showthread.php?t=65583
Turner is offline  
Old 11-18-2015, 03:16 AM
  #4  
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 4,786
Default

60 class plane, with 60 class motor, 6S 3300 to 5000 mah LiPo would be about right...

You're dropping in a .90 class motor though and that needs more cells in series using the LiFe. Its a 6S to 8S motor using LiPo and the LiFe (A123) are about 10% lower voltage. You need 7S to 9S

4600 mah is good.
fhhuber is offline  
Old 11-18-2015, 04:05 AM
  #5  
70sflyer
Member
Thread Starter
 
Join Date: Nov 2010
Location: Atkins Iowa
Posts: 104
Default

thanks for that fhhuber,so your saying 4600 mah is ok but i need more cells to make 7S to 9S.
70sflyer is offline  
Old 11-18-2015, 04:07 AM
  #6  
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 4,786
Default

Note that the A123 will be heavier than the same power in LiPo... For some planes that won't be too big of an issue. Not sure about yours.
fhhuber is offline  
Old 11-21-2015, 07:04 AM
  #7  
ramboman
Member
 
Join Date: Mar 2006
Location: Waterloo, Belgium
Posts: 121
Default

Originally Posted by fhhuber View Post
Note that the A123 will be heavier than the same power in LiPo... For some planes that won't be too big of an issue. Not sure about yours.
a123 batteries don't need to be removable... they can be used as weight to balance the plane... instead of lead...
ramboman is offline  
Old 11-21-2015, 08:20 AM
  #8  
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 4,786
Default

We always should be using the batteries to balance the plane and avoid adding dead lead...
fhhuber is offline  
Old 11-21-2015, 08:33 AM
  #9  
ramboman
Member
 
Join Date: Mar 2006
Location: Waterloo, Belgium
Posts: 121
Default

Originally Posted by fhhuber View Post
We always should be using the batteries to balance the plane and avoid adding dead lead...
LiPo batteries need to be easily removed to be charged... a123 can be charged in place without risk... that's the difference
ramboman is offline  
Old 11-21-2015, 10:11 AM
  #10  
fhhuber
Super Contributor
 
fhhuber's Avatar
 
Join Date: Mar 2013
Posts: 4,786
Default

Generally, ease of removal is not a serious issue.

All but one of the models I have, total weight is more important.

The Proctor Sopwith will probably be better off with the A123 than LiPo because of short nose and needing to stuff more weight forward. Its also looking hard to make a good battery access in that e-conversion.

Its usually more convenient to get the battery to the charger than the whole model. It would be quite the mess to try connecting 4 planes to my charging station at once, but many packs could fit really well.
fhhuber is offline  
Old 11-21-2015, 10:35 AM
  #11  
ramboman
Member
 
Join Date: Mar 2006
Location: Waterloo, Belgium
Posts: 121
Default

Originally Posted by fhhuber View Post
Generally, ease of removal is not a serious issue.

All but one of the models I have, total weight is more important.

The Proctor Sopwith will probably be better off with the A123 than LiPo because of short nose and needing to stuff more weight forward. Its also looking hard to make a good battery access in that e-conversion.

Its usually more convenient to get the battery to the charger than the whole model. It would be quite the mess to try connecting 4 planes to my charging station at once, but many packs could fit really well.
I bring my planes to the charger, to the back of my car...
One at a time, charging at 4c between 2 flights...
ramboman is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FlyWheel
Batteries & Chargers
31
05-30-2016 05:44 PM
dongshan
Batteries & Chargers
2
03-01-2013 03:21 PM
SimonXi
Batteries & Chargers
0
08-12-2011 05:08 PM
Howard Matos
FMA Direct
0
07-28-2011 02:04 PM
kyleservicetech
Batteries & Chargers
0
12-12-2010 05:50 AM

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


Quick Reply: Battery setup


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.

Page generated in 0.11310 seconds with 15 queries