Disconnect the positive or negative of my battery for drain issue car?

[bimmershark]

negative...i take care of condo cars down here in florida we drive the cars once a month so the rest of the month they sit unhooked with the positive cable only hooked up and have zero issues

[Gubernaculum]

The negative. Doing the positive risks grounding the battery out on the metal of the car when you're swinging your wrench. Yeah you're probably not going to get electrocuted but the arc and short could: mess up your wrench, cause abnormal brown staining of your underbritches, blow up your battery, splash battery acid in your dickhole, or ignite your trunk full of moonshine or various methamphetamines.

[blackhawkimpact]

Just remove battery from car and take it with you.

[Hey_You]

Disconnect your negative. Disconnecting your positive can fry your PCM when you hook it back up already grounded.

[bmwstudent]

Drill a hole in the top of the battery and siphon out the acid then pour it your cat. I saw so many responses to this question i had to add my own.

[dnguyen1963]

Harborfreight Tools is selling a floating battery charger for $4.99 right now. You can hook it up and keep your battery charged throughout the winter.

[b*saint]

go lick some wires that are hooked up to both posts and come back to me and tell me what you find. you're lowering your body's resistance and in turn increasing the amperage... ;) I=V/R

Not saying you're going to get hurt at 12V, but saying it's "very low voltage" and you can't get hurt is dangerous to tell someone who is in experienced with electricity.

Jesus christ, no one listens to what I say. I said you have to be an idiot to get killed with a car battery. You're not lowering your body's resistance your changing the potential between the post via a wet jumper (your tongue). This is being an idiot. You're more likely to blow yourself up with the gases the battery puts out than get electrocuted.

OP, staying on topic, if you want to know for sure that your battery won't drain, disconnect both leads and remove the battery. If you just want to make sure nothing is drawing it down, disconnect the red. Wicked simple.

[Jaxx_]

If you can concoct a way to increase the amperage through your body of the 12v, you're a brilliant fucking idiot.

go lick some wires that are hooked up to both posts and come back to me and tell me what you find. you're lowering your body's resistance and in turn increasing the amperage... ;) I=V/R

Not saying you're going to get hurt at 12V, but saying it's "very low voltage" and you can't get hurt is dangerous to tell someone who is in experienced with electricity.

[AndrewBird]

It all comes down to conductivity. EVERYTHING conducts electricity, given a high enough voltage (even things like glass and rubber). 12v is not high enough voltage to conduct through your skin. If you used needles or something stuck into you, then you would be able to get a shock, but even then it is a bit iffy.

And it's amps that are dangerous, not volts. 1,000,000,000v is just as safe as 12v if at a very low amperage. That's how tasers work. Extremely high voltage to be able to conduct through your skin, but low amperage so it won't kill whoever it is shocking.

[b*saint]

Keep thinking that way and you're going to end up hurt. While I agree it's very unlikely that you will get hurt from a car battery's voltage passing through you, even 30V can be dangerous.

If you can concoct a way to increase the amperage through your body of the 12v, you're a brilliant fucking idiot.

[Jaxx_]

Were talking very low voltage here...you really can't electrocute yourself if you tried. You can grab both posts on a battery without issue.

Keep thinking that way and you're going to end up hurt. While I agree it's very unlikely that you will get hurt from a car battery's voltage passing through you, even 30V can be dangerous.

[dsobering47]

Doesnt matter. Disconnect one of them. IF you want bonus points, disconnect the negative lead and put a voltmeter in series with the negative cable and observe your draw (amps, not volts). You can then start pulling fuses until the draw drops, then BOOM, you found your shitty draw problem.

[FLG]

I dont think he was wondering in which order does he remove the battery leads, just which he should keep off.

The negative.

Were talking very low voltage here...you really can't electrocute yourself if you tried. You can grab both posts on a battery without issue.

[b*saint]

I dont think he was wondering in which order does he remove the battery leads, just which he should keep off.

[jlevie]

As mentioned above, you always disconnect the ground cable first then the positive cable. Installation is the reverse, positive cable then ground cable.