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Tractor Talk Discussion Forum

O-T battery charger and fencer

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old

06-03-2006 08:15:13




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Ok I don't have a good fence charger/eletic fencer that just runs off normal 110 volts but I do have a couple of the old 6 volt ones. Will a small battery charger put out enough to work the fence charger??




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MarkB_MI

06-03-2006 15:27:31




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 Re: O-T battery charger and fencer in reply to old, 06-03-2006 08:15:13  
You'll probably need a battery in the circuit. The problem is that battery chargers don't have any filters, while the fence charger needs a constant input voltage to work. With no battery in the circuit, the voltage applied to the charge will fluctuate between zero and 170 volts at a frequency of 120 cycles per second.



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RustyFarmall

06-03-2006 13:35:21




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 Re: O-T battery charger and fencer in reply to old, 06-03-2006 08:15:13  
Try it and see what happens, if you get a good jolt from it at the far end, I'd say you are good to go. I used a small battery charger to power an old car radio in the barn for several years. It worked just fine. Electric fence chargers are not rocket science.



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RAB

06-03-2006 10:21:09




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 Re: O-T battery charger and fencer in reply to old, 06-03-2006 08:15:13  
With a battery fence charger you are probably only about half a joule energy per pulse. At even two pulses per second that is only one watt output. Assuming only 50% efficiency that means your power drain is 2 Watts or current drain is 1/3rd amp at 6 volts.
Now a mains unit might put out 2 Joules per pulse (which would give you a very large jolt). They are usually less, unless for looooong fence runs.
Often, rearing pens for pheasants are protected from foxes in the way I described.
Regards, RAB
Regards, RAB

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Coloken

06-03-2006 09:44:42




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 Re: O-T battery charger and fencer in reply to old, 06-03-2006 08:15:13  
If those are the old hit and click fencers..
you probably Would have more chanch of over charging or runing low on water than anything else. As I remember, 6 volt battery lasted for month or better...charger only needs some thing like a day to charge. Hook it up and run the charger every week or so when you happen to think of it. Bet one of the smallest chargers you can find would keep up with it.

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John T

06-03-2006 08:47:35




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 Re: O-T battery charger and fencer in reply to old, 06-03-2006 08:15:13  
Hey Old you rascal, As Im sure youre already aware, we just cant answer that question exactly UNLESS we knew the current draw the charger requires and the amps rating of the charger.

HOWEVER, we can take a decent educated best guess, so heres mine FWIW.

UNLESS the "small charger" you have in mind is extremelyyyyy yyy small like one of those 1/2 amp battery tenders for winter storage use, and knowing those 6 volt chargers (especially the newer electronic type versus the old technology buzzers) require very low current, ITS MY BEST GUESS YESSSSS any decent size charger (Im thinkin one of those small 4 amp or so types) will power the fence charger fine UNLESS ITS A CHARGER OLDER THAN US LOL..... ..

I would hook her up n observe how many amps the charger is putting out and just try her n see. I bet the charger wont be running at much over a few amps or even less then an amp depending on if its a newer solid state or an old buzzer.

ANSWER hook her up n see and unless the charger pegs at max charge (which I doubt but depends on it and the fence unit) youre good to go. Maybe have the wifey hold the fence wire output lead????? ????? ??

John T

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old

06-03-2006 09:29:49




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 Re: O-T battery charger and fencer in reply to John T, 06-03-2006 08:47:35  
To bad the battery charger I have doesn't have a meter on it. I thinks its like a 4 amp one but not sure. Guess I could always rig up a 6 volt tracxtor battery and hook the charger to the battery and the fencer also and maybe brake even, if I'm lucky that is



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Bob

06-03-2006 08:38:41




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 Re: O-T battery charger and fencer in reply to old, 06-03-2006 08:15:13  
If you want to do that, get a 6-Volt gel-cell or other small battery and use it along with the charger to stabilize the little charger's output... that would probably be easier on the fencer.



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John T

06-03-2006 08:52:19




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 Re: O-T battery charger and fencer in reply to Bob, 06-03-2006 08:38:41  
Good point Bob, Im sure a super cheapo (or any others for that matter) small charger is only putting out pulsing unfiltered unregulated 1/2 sine wave DC which some devices dont digest too well lol. As you know a battery acts like a big electron storage bank to buffer n filter n smooth out what a charger is pumping through them.

Lets let Old hook her up n see????? ????

Let us know Old

John T

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