A123 Pack Applications  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> A123Racing Support >> A123 Pack Applications
Page: [1]

Login
Message << Older Topic   Newer Topic >>
A123 Pack Applications - 4/19/2008 12:27:14 AM   
J-3



Posts: 187
Joined: 2/5/2002
From: Saint Peters, MO, USA
Status: offline 		I fly 40 to 120 sized glow and 1/4 scale gas (33cc Homelite, & G20EI engines) airplanes, and I would like to know if a 2 cell A123 pack would be a good application as a receiver pack for the Glow models and maybe an ignition pack for my G20EI on my gas airplanes?

Any ideas and suggestions would be welcomed, especially "everydayflyer" who seems to be a really great asset here!

Thanks...Brian
       Post #: 1

RE: A123 Pack Applications - 4/19/2008 3:46:16 AM   
everydayflyer



Posts: 852
Joined: 8/21/2005
From: Buchanan, GA, USA
Status: offline 		Use 2S 2300 packs and if you want more capacity use 2S2P for 4600 mAh capacity. No regulators , etc. required. 2S approx, same voltage as a 5 cell Ni. A123 capable of delivering high amps. and have a really flat discharge. Great fast charge capabilities. Many use a CellPro4 which will charge a 2S at 4A. so top off are fast.


Charles

(in reply to J-3)
       Post #: 2

RE: A123 Pack Applications - 4/19/2008 9:05:02 PM   
J-3



Posts: 187
Joined: 2/5/2002
From: Saint Peters, MO, USA
Status: offline 		Thanks for replying everydayflyer, I have read a lot and needed a little conformation. I will order the batteries and see what I can come up with for charging. Thanks again....Brian

(in reply to everydayflyer)
       Post #: 3

RE: A123 Pack Applications - 4/20/2008 2:57:32 AM   
everydayflyer



Posts: 852
Joined: 8/21/2005
From: Buchanan, GA, USA
Status: offline 		For those who want rather detailed imformation on A123s as receiver packs this site has a good run down on this application.

http://mysite.verizon.net/vze2qbfc/id25.html

Charles

(in reply to J-3)
       Post #: 4

RE: A123 Pack Applications - 5/10/2008 2:41:11 AM   
TedMo


 

Posts: 39
Joined: 6/11/2006
From: , FL, USA
Status: offline 		I have been attempting to learn as much as possible prior to committing to the A123 cells. Thus far it appears like this is the way to go for many good reasons. My only problem right now is that from what I have read there are more than 1 type of 123 cells. Or perhaps more correctly several types of Li ion cells? This is what has me stumped. I want to be sure I purchase the correct ones. I haven't seen them available as yet in any of our usual suppliers sites i/e Horizon, Tower, FMA etc. Perhaps I have been missing something? Also since I generally use 3S1P Li Po's which supply 11.1 V. will 3- A123 cell at 9.9v. provide me what I need to power my RX and servos properly? Will I need a BEC?

(in reply to everydayflyer)
       Post #: 5

RE: A123 Pack Applications - 5/10/2008 2:59:17 PM   
everydayflyer



Posts: 852
Joined: 8/21/2005
From: Buchanan, GA, USA
Status: offline 		The best LiFePo cells are true A123 Systems / A123 Racing cells also used in DeWalt 36 volt cordless power tools.

Places to purchase ready made packs

http://progressiverc.com/LiFePO4.html


If you are using a 3S LiPoly then you are using a regulator. You can use a 3S A123 with a regulator or a 2S without a regulator. Use Link in posy above .

Charles

(in reply to TedMo)
       Post #: 6

RE: A123 Pack Applications - 5/10/2008 6:22:04 PM   
dirtybird


 

Posts: 2825
Joined: 1/25/2002
From: Mesa, AZ, USA
Status: offline 		delete

< Message edited by dirtybird -- 5/10/2008 6:23:41 PM >

(in reply to J-3)
       Post #: 7

RE: A123 Pack Applications - 5/11/2008 12:32:19 PM   
Capt Lou


 

Posts: 179
Joined: 1/3/2007
From: Manahawkin, NJ, USA
Status: offline 		J-3:

I agree with what Charles said. I just got a Wild Hare 50cc Extra. I power it with a DA 50cc gas engines and put a JR X9303 2.4gHz system in it. I use a 2300 mah A123 battery pack for the ignition and and dual 2300 mah packs (one is a back-up) for the receiver. I use a Cellpro 4s charger to charge. This is a great combination. I can easily get 3-4 flights out of the packs and they charge up in just 10 minutes at the field. They give you everything you want in batteries - good flying time and quick charging and the A123 does not have the heat/explosive issue of traditional lipo's. The Cellpro also allows you to check accurately the capacity of the battery at charge. I was uncertain about these batteries but a friend, who is an electronics techie, convinced me when I saw how well they worked in his 50cc plane. However, you need to be cautious about the voltage output as a battery pack is rated at 6.6v (3.3v per cell) and you need to determine how this impacts servos that are rated at maximum of 6.0v. Futaba has told me that they can be used with its R617 receiver because it has an internal voltage regulator but recommends that you use an external voltage regulator for the 6.0v servos. My technie friend tells me that you don't need the regulator on the JR system.

(in reply to J-3)
       Post #: 8

Page:   [1]
All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> A123Racing Support >> A123 Pack Applications
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.594RCU1