Battery disconnectors are available for security purposes. I believe this was discussed in one of your previous posts. They would work for this too. However, disconnecting the battery will also typically stop your clock and erase the stereo system's station presets. But if you want to save your battery, it might be worth it. An alternative would be to have a battery charger that you could plug into a wall socket that automatically tops off your battery's charge periodically. Of course that will only work if you are parked near a socket.

I store a few cars and I think you've missed some important facts about batteries. The amount of current a car uses when the key is off--the radio presets etc--is minuscule and would take weeks to run down a battery. Batteries lose charge when not being used anyway. Solar cell chargers are readily available, or very low current plug-in top-off chargers. But I find it's not really a big deal to just let the battery run down, but then put a charger on the car or tractor when you need it, or even jump start it. I suppose the battery would last longer if kept charged, but the difference is small.

But even with the use of these chargers, if you still feel compelled to disconnect the battery, you would never need two switches. Current only flows in a circuit, so only one switch at one terminal is all that will ever be necessary.

The best way is to manually disconnect both the terminals under the bonnet. If not two separate switches can be placed for anode and cathode wires drawn inside the car & fix it with switches to act as circuit breakers.

Is it really simple as it sounds? I think this is not a very difficult thing to do. But I believe it's tedious. Imagine you really have to do it manually? Is there any other alternatives? Is there any device I could install on my car so I wouldn't have to do the task manually?

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I'm lazy so here are my thoughts. There are all kinds of fun ways you could fix this problem, but personally I'd just pop the hood and disconnect the ground and be done with it. I wouldn't bother for anything less than a month though. If your battery is dying faster than that, you either need a new battery, or something in your car is drawing too much power when the car is off, which is actually pretty easy to narrow down, just takes some time (most of the time it's that stupid light in a glove box or console).

You wouldn't want to just put a switch inline on the ground battery cable. It would have to be a pretty big switch capable of handling like 4 gauge wire and probably up to 1000 amps. Better off putting in a relay I guess.

Hi, Sirs, Thanks for the comments. I have been experiencing this issue. When parked for long time I just disconnect the negative and positive terminals to be sure that the battery is totally terminated to the car <being the negative terminal is connected with the body of the car>. May be after couple of week when I connect the junctions, the current flow generally as good as when previously. All that needed is the spanner and a few minutes time for unfixing and fixing whenever required.

Suggestion is that because of the tediousness of the manual operation, why not this can be overcome by this way. That is = that when the positive /negative terminal's thick cable shall be fixed with appropriate switch inside the car. This may be connected with a push-n-pull type switch for more sure of activating and disconnecting the battery terminals. When the circuit is incomplete then the battery shall not discharge current. It can be achieved so that the battery is saved from nullifying effect. Best Regards Dr V Kumar