Anonymous-0
Well-known Member
If I put a night switch on my negative battery terminal will that
protect from battery drain? It's a normal 12v negative ground
circuit.
protect from battery drain? It's a normal 12v negative ground
circuit.
- Thread starter Anonymous-0
- Start date
old
Well-known Member
- Location
- Camdenton Missouri
Yes in theory it will stop a battery drain if the drain is from something wrong with the tractor or what ever wiring. But if your battery has an internal short or the top is real dirty then it may not help at all. In the long run it would be better to fix the drain then to do any thing else
Always put cut off in grounded side regardless if it is pos or neg. If you open live side you still have possible leak up to the point of where you install the cutoff. Plus, if you touch with tool or drop tool on the battery side of the cutoff you have instant sparks. If vehicle is late model with lot of electronics it is impossible to eleminate some current draw. Theoretically the memory draw of a radio should not draw down a battery in a year or more but when IH started putting solid state radios in the 86 series tractors, batteries were going dead on the lot. Then they started removing the fuse that fed them, problem solved.
randy hall
Member
an electrican told me to never open the ground side.
randy hall
Member
yes i'm from ohio.
bobs old iron
Well-known Member
my batt are easy accessable, got my 1/2 wrench with me, never use tractors every day, so i just disco the batt, both or power cable.
Mark - IN.
Well-known Member
Yes. A battery completes a circuit if positive and negative are connected. If one of them is disconnected, current cannot flow.
For long term storage, manufacturers like Exide suggest charging the battery, and then draining the electrolyte into clean glass, and putting on a shelf. have I ever tried that? Nope. It was just something that came up in an all seminar put on by Exide that I once took on batteries, which is a science all of its own.
But to your point, disconnect one terminal or the other so that it will not complete a circuit, and current cannot flow, so it will not discharge that way.
Mark
For long term storage, manufacturers like Exide suggest charging the battery, and then draining the electrolyte into clean glass, and putting on a shelf. have I ever tried that? Nope. It was just something that came up in an all seminar put on by Exide that I once took on batteries, which is a science all of its own.
But to your point, disconnect one terminal or the other so that it will not complete a circuit, and current cannot flow, so it will not discharge that way.
Mark
In residential wiring, you switch the hot wire. The reason is because then you have a "hot" wire at the light bulb, even with the switch off, and you are a path to ground when you go to change the bulb.
On a vehicle, you ALWAYS disconnect the ground from the battery first as a matter of safety. If you go to unhook the hot post while touching the tractor, you get zapped. If you accidentally swing the wrench into a metal part of the tractor with the ground hooked up, you short out the battery. In extreme cases, the wrench can "weld" between the positive post and the tractor's frame. The short circuit can cause the battery to explode in your face.
Not really a good idea in that the starter solonid terminal is easily damaged . If folks are careful it still seems that terminal either turns in the case or gets broken. Works better to do it at the battery and definitely easier if he installed what is pictured in the post.
if this is on a tractor its good but if its a newer car or truck if you unhook the batt the computer looses all its memory and from what i was told its not good for it, i have some "float" chargers i use they are tiny little battery chargers that keep the battery hot and charged they work great and are cheap.
I have a question, I'm not familiar with the term 'night switch'.
Honest question, just ain't heard it called that.
Maybe I live in a hole, I've called them battery disconnect switches.
Is this a light sensitive switch, hence the name?
Either way, a battery disconnect switch, especially if hidden, also makes a nice anti-theft device, to a certain extent.
Thanks, Danny
Honest question, just ain't heard it called that.
Maybe I live in a hole, I've called them battery disconnect switches.
Is this a light sensitive switch, hence the name?
Either way, a battery disconnect switch, especially if hidden, also makes a nice anti-theft device, to a certain extent.
Thanks, Danny
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