charging 12v field bat with car charger  
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 >> charging 12v field bat with car charger
Page: [1]

Login
Message << Older Topic   Newer Topic >>
charging 12v field bat with car charger - 4/2/2002 1:15:31 AM   
Billy Hell


 

Posts: 2926
Joined: 1/23/2002
From: Nashville, TN, USA
Status: offline 		I have the standard Hangar 9 12v field battery. I also have a car battery charger that will go down to 2amps. My trickle charger just died on me. I used the car charger at 2 amps for 2 hours and it seemed to work fine. I know if I left it on over night the gasses would get pretty intense but woudn't it be alright for the short time I'm charging? No bad smells or anything.
Jim T.
       Post #: 1

charging 12v field bat with car charger - 4/2/2002 5:32:53 AM   
Jazzy



Posts: 1106
Joined: 1/8/2002
From: Erie, PA, USA
Status: offline 		Billy, yes the automobile charger will work just fine. Most of them have a tapering charge. I find it works better than a wall wart.
I've got a rescued Sears 2 or 6 amp charger. Instead of having a meter with a bar showing % charged, mine shows the Amps being put into the battery. As the battery becomes fully charged the indicator hangs between 0 and 1 amp. I never put my Ammeter on it to see what it's trickle rate is - I just call it 'good' when the needle drops down.

_____________________________

Aww $#!^.... I left the )@#& transmitter at home!

(in reply to Billy Hell)
       Post #: 2

charging 12v field bat with car charger - 4/2/2002 9:03:16 AM   
Billy Hell


 

Posts: 2926
Joined: 1/23/2002
From: Nashville, TN, USA
Status: offline 		I have left this thing on a Hangar 9 field battery before and in the morning the battery was letting off some intense battery odor. That scared me (I went and bought another trickle charger). After the trickle charger died last week I thought I would try to figure the math. 500mah trickle vs. 2 amp charger. I figure I could leave it hooked up for around 4 hours safely. Thanks for the input.

(in reply to Billy Hell)
       Post #: 3

charging 12v field bat with car charger - 4/2/2002 12:08:55 PM   
Jazzy



Posts: 1106
Joined: 1/8/2002
From: Erie, PA, USA
Status: offline 		Sounds like a constant current charger. Not good for our applications... Unless of course you use a lawn & garden lead acid battery or the like.
Sorry.
Also sounds like your field batt is just about toast now.
Gel cells are not designed to be charged much over an Amp... at least that's what I read on the batts ratings. (I use Name brand R/C batts, (7 AH), Simplex, (18 AH), and Yuasa, (7 & 4 AH). I have a theory that Yuasa makes most of them anyway.)

Any comments Red?

_____________________________

Aww $#!^.... I left the )@#& transmitter at home!

(in reply to Billy Hell)
       Post #: 4

Auto Chargers - 4/2/2002 4:19:37 PM   
David Root


 

Posts: 22
Joined: 3/6/2002
From: West Buy Golly Shelby NY
Status: offline 		Some (most) automotive chargers say "Automatic" on them, they will taper down to almost nothing, and will not hurt your gell cell. Sounds like yours is not automatic.

David Root

(in reply to Billy Hell)
       Post #: 5

charging 12v field bat with car charger - 4/2/2002 5:06:50 PM   
Billy Hell


 

Posts: 2926
Joined: 1/23/2002
From: Nashville, TN, USA
Status: offline 		Would it be better for me to go get a lawn and garden battery?

(in reply to Billy Hell)
       Post #: 6

charging 12v field bat with car charger - 4/2/2002 6:20:46 PM   
David Root


 

Posts: 22
Joined: 3/6/2002
From: West Buy Golly Shelby NY
Status: offline 		It would be cheaper! Prolly last longer too.

Can't tip a real lead acid battery, that is the glory of a Gell Cell. You could charge it at 2 amps though.

D R

(in reply to Billy Hell)
       Post #: 7

Page:   [1]
All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> charging 12v field bat with car charger
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

0.422RCU3