Positive or negative.
2007-11-16 04:14:58 · 11 answers · asked by Mrs. Fuzzy Bottoms 7 in Cars & Transportation ➔ Maintenance & Repairs
ALWAYS REMOVE THE NEGATIVE FIRST. If you remove the positive first there is a chance that you could cause sparks by touching the wrench to anything metal, while it is in contact with the terminal. These sparks could be a possible ignition source for any flammable gasses in the area. When battery's are being charged they do give off a gas that could burn. That is why they put the warning labels on the battery's
2007-11-16 04:27:51 · answer #1 · answered by ugly joe 4 · 6⤊ 0⤋
Removing Battery Cables
2016-10-16 09:51:23 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Remove the GROUNDED lead first. In almost all cars since the 1960's this is the NEGATIVE lead, but not necessarily.
The grounded lead usually has a braided metal strap leading to the car's frame. It is usually colored black, while the "hot" lead is red.
The reason is that after removing the grounded lead, there is no chance of "drawing a spark" from the ungrounded lead when you remove it, and possibly igniting hydrogen gas in the vicinity of the battery.
Re-connect in the opposite order, putting the grounded lead on LAST.
2007-11-16 04:27:18 · answer #3 · answered by fr.peter 4 · 4⤊ 0⤋
Remove the negative lead first.
2007-11-16 04:17:29 · answer #4 · answered by mrb_2131 2 · 7⤊ 0⤋
Doesn't really matter, although I usually remove the negative first as a matter of course. The ground cable is always easier to remove than the positive cable, for some reason. Just be careful that you remove it from the post entirely as there is a risk of personal injury if not done correctly.
When reinstalling the battery, I usually follow the same procedure; ground cable (negative) first. Again, that's because it is usually easier with which to work.
Good luck!
2007-11-16 04:21:20 · answer #5 · answered by Kiffin # 1 6 · 0⤊ 10⤋
Only if your house or where ever your at using the laptop lost power which would result in the laptop shutting down the incorrect way. Having a battery, even one that may only last 20 minutes would give you enough time to turn the laptop off the right way if the power goes out.
2016-03-13 23:25:18 · answer #6 · answered by Anonymous · 0⤊ 0⤋
you remove the ground first (negative on most cars)
that way if your wrench hits anything it won't short out
2007-11-16 04:23:12 · answer #7 · answered by Anonymous · 5⤊ 0⤋
when removing a battery it truely doesnt really matter, but statistics say that you should remove positive first.
2007-11-16 04:18:23 · answer #8 · answered by Brett T 1 · 1⤊ 11⤋
It does not matter which one you remove first....
2007-11-16 04:18:12 · answer #9 · answered by Anonymous · 0⤊ 8⤋
Take your pick. Text books always tell you negative though.
2007-11-16 04:17:19 · answer #10 · answered by ryankneale 6 · 0⤊ 6⤋