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charging a battery assistance

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Mike Welch

Joined: 13 Feb 2011
Posts: 272

Posted: Sat Dec 31, 2011 1:26 pm Post subject: charging a battery assistance

List members,



  I'm restoring a Honda CL125 Scrambler, and I have a dilemma.  It has a brand new 6 volt

battery, but it's very low, and I need to recharge it.  I have a regular 12V car battery charger,

and a 12V Float Charger, neither of which is appropriate to charge a little 6V dinky M/C battery.



  Is there a way I can charge this little 6V battery with a home-made modification to that

Float Charger, or could I use one of those "Wall Chargers"?  I've got tons of them from 

ALL kinds of electric goodies over the years (I bet I have about 30 of them in all kinds of outputs).



  The Float Charger says "INPUT 120VAC 14W---OUTPUT 15VAC 600mA, and it has 

some sort of little rectangular box inline in the battery cable to the leads.



  I realize this isn't directly airplane related, but maybe the electric pointers and theory will be 

helpful to many list members, like me.



Thanks for your help!!

Mike Welch

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n8zg(at)att.net
Guest

Posted: Sat Dec 31, 2011 5:29 pm Post subject: charging a battery assistance

Mike - 



Schumacher's 1562A will fit your need.



http://www.amazon.com/Schumacher-SEM-1562A-Speed-Charge-Maintainer/dp/B0009I

BJAS 



Neal



--

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skywagon

Joined: 11 Feb 2006
Posts: 184

Posted: Sun Jan 01, 2012 4:57 pm Post subject: charging a battery assistance

Limiting the current is key of course.  But, if you are going to risk this 

method of charging, you must stand by to stop the charging at the limit of a 

6 v. battery.  Otherwise, even thou current limited, it will just keep 

charging up to the voltage this 12 v. charger would normally put out.  The 

poor 6 v. battery would be gassed out of existence and probably do some type 

of internal "melt down".  Just have a good volt meter standing by and test 

the battery every 15 min. or less and kill the charge when it gets to about 

6.8 volts,  or 7 volts max.



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Mike Welch

Joined: 13 Feb 2011
Posts: 272

Posted: Sun Jan 01, 2012 6:52 pm Post subject: charging a battery assistance

Thanks guys for the replies.  I found a Shumacher 1562A I was going to buy at a good price.

But before I committed to buy it, I thought I'd let the battery sit overnight, and see if it would 

recharge itself. 

  Today is had enough plenty of power to allow me to kickstart the bike.



  I would prefer not to buy another charger unless I REALLY have to.  I have one Sears big unit

and 3 Harbor Freight battery tenders/maintainers (for rarely used equipment).



  At this point, I think I have enough info & help, thanks to you guys.  I should be

in good shape....unless I leave the key on again.  If I do, I'll buy the Schumacher!



Mike Welch

On Jan 1, 2012, at 6:30 PM, David Lloyd wrote:



[quote] 

 

 Limiting the current is key of course.  But, if you are going to risk this method of charging, you must stand by to stop the charging at the limit of a 6 v. battery.  Otherwise, even thou current limited, it will just keep charging up to the voltage this 12 v. charger would normally put out.  The poor 6 v. battery would be gassed out of existence and probably do some type of internal "melt down".  Just have a good volt meter standing by and test the battery every 15 min. or less and kill the charge when it gets to about 6.8 volts,  or 7 volts max.

 

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ceengland(at)bellsouth.ne
Guest

Posted: Sun Jan 01, 2012 8:12 pm Post subject: charging a battery assistance

I'd try asking a few neighbors about their battery chargers. I've got 

one that's only about 20 years old that has a 6 volt setting. (You'd 

still have to monitor it when using one of those older chargers, but at 

least you wouldn't be feeding it 16-18 volts as it comes up to full charge.

On 01/01/2012 06:30 PM, David Lloyd wrote:

[quote] 

 <skywagon(at)charter.net>



 Limiting the current is key of course.  But, if you are going to risk 

 this method of charging, you must stand by to stop the charging at the 

 limit of a 6 v. battery.  Otherwise, even thou current limited, it 

 will just keep charging up to the voltage this 12 v. charger would 

 normally put out.  The poor 6 v. battery would be gassed out of 

 existence and probably do some type of internal "melt down".  Just 

 have a good volt meter standing by and test the battery every 15 min. 

 or less and kill the charge when it gets to about 6.8 volts,  or 7 

 volts max.



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