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Charging batteries on my tractors, need to be reminded later I'm sure lol


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#1 wvbuzzmaster OFFLINE  

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Posted March 04, 2011 - 07:04 PM

Ok, I am posting only because I think I will forget to turn off the battery chargers in my shop later this evening, I started charging the completely dead batteries on 2 of my tractors around 5pm, it is now 7pm. They are brand new 2 yr old batteries, but something on the tractors is running them down while parked. Any suggestion on that, they have starter generators on them, and I can't think of what could cause the batteries to die when sitting. Also, anyone have a recommendation for inline battery cutouts for lawn/garden battery terminals?

#2 Texas Deere and Horse OFFLINE  

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Posted March 04, 2011 - 07:12 PM

Check the external voltage regulator, make sure the contacts are not stuck closed.
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#3 DH1 ONLINE  

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Posted March 04, 2011 - 07:13 PM

Batteries will self discharge especially if there dirty and there is moisture, condensation. But not that much.
I've seen battery terminal disconnects for post type batteries, might be able to adapt to L/G battery.
The regulator I think would be the most likely cause for batt. drain???
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#4 MH81 ONLINE  

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Posted March 04, 2011 - 08:19 PM

If you just can't track it down, here's a mountable cutoff switch for $9

Heavy Duty Battery Cutoff Switch
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#5 Sparky OFFLINE  

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Posted March 04, 2011 - 08:22 PM

Olderbatts that have been sitting unused can have what is thought "laziness" . Maybe. In the case of starting batts they may be down to 10 or 20 percent capacity and they may quickly lose their forming voltage like capacitors once off charge. They may just not be good batts. I have had to discuss this with P.D.' s at times.
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#6 DanO OFFLINE  

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Posted March 04, 2011 - 08:40 PM

I have put these Cut Offs on all my GT's and My Farmall Super A Tractor Too, they work great & are simple & Cheap , Just a 1/4 turn of the green knob & that's it! Look on Amazon they only cost about $7 each


Posted Image

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#7 DH1 ONLINE  

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Posted March 04, 2011 - 08:51 PM

I have put these Cut Offs on all my GT's and My Farmall Super A Tractor Too, they work great & are simple & Cheap , Just a 1/4 turn of the green knob & that's it! Look on Amazon they only cost about $7 each


Posted Image


That's exactly what I have on the Electric Massey and the Electric Sears.

#8 wvbuzzmaster OFFLINE  

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Posted March 04, 2011 - 09:27 PM

Those switches work on automotive batteries but not the L/G batts but I finally found 2 versions that do, one is similar to posted above, and the other (my favorite) a knife switch. The bad part is neither will fit under the hoods! Mabey I need to just put alligator clips on all the negative cables lol.

#9 ducky OFFLINE  

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Posted March 04, 2011 - 10:24 PM

What we may want to look at is a parasitic draw going on here.
Take either the B+ or B- off the battery and put your DVOM in that curciut and set for the Amp reading and see if there is any current moving in that circuit when everything is off. WARNIG _ DO NOT CRANK THE ENGINE! You will be puttting a new fuse in your DVOM.
If all is off and you see any voltage reading above a few milavolts this is your drain.
If not you can start looking at the battery having internal problems.
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#10 wvbuzzmaster OFFLINE  

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Posted March 04, 2011 - 10:27 PM

What we may want to look at is a parasitic draw going on here.
Take either the B+ or B- off the battery and put your DVOM in that curciut and set for the Amp reading and see if there is any current moving in that circuit when everything is off. WARNIG _ DO NOT CRANK THE ENGINE! You will be puttting a new fuse in your DVOM.
If all is off and you see any voltage reading above a few milavolts this is your drain.
If not you can start looking at the battery having internal problems.

Good suggestion Ducky, I will look at that, I figure there has to be cause I haven't used them in a few months again. I doubt it's the batteries cause they are new, or were, 2 years ago.

#11 WQDL753 OFFLINE  

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Posted March 05, 2011 - 02:12 AM

Yea, what Ducky said..................
and if you don't find a paracitic load causing the drain, than your "new" batteries are probably bad.
I had a relativly new battery not to long ago that gave me the same kinda problem. In doing some unortidox testing I found my drain, I could get voltage from the + terminal to the plastic side of the battery with it disconected and clean!!!
When I told my dad about it, he said it used to happen all the time but to often these days.
In other words new does not = good.




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