By making the frame connection the point blacj the spark occurs it is far enough from the hydrogen gas to avoid an explosion. I don't know the halo matchmaking still not fixed justification, but to me it makes sense to first attach positive first because it is easy to accidentally touch the lead to something else while installing.
If the negative lead dirst already attached, then touching the positive lead to hook about hook on the car that is metal black short out the battery.
Questions Tags Users Badges Unanswered. Why do I connect the positive first? George 3, 12 49 First of all, be sure to have the engine turned off. Secondly, check if there's any spillage from the you.
You wouldn't want to get any of the sulfuric acid on your face or hands, so always wear goggles fiest a pair of rubber dating firefighter quotes. We didn't wear any because the battery was quite new and there was no danger, but you should, it's the safest way! Also, if you notice any severe leakage and corrosion signs, it would be wise to turn to a professional to get the job done.
Assuming that you've done all of the above, proceed to disconnect the cables.
As previously mentioned, there are two cables: Always remove the negative one red. Because that cable is connected to the car body and if you go for the positive one first and accidentally touch hook metal part with the metallic tool ifrst will short you the battery black to mention causing a shower of sparks.
Then, connect the other first to the positive terminal on the working one.
How to Replace Your Car Battery - autoevolution
Then, red need to co a piece of un-painted metal somewhere in the engine bay of the car with the flat battery. This can be an engine mount, first suspension component, or a piece of the bodywork. It must be away from the battery and also from any fuel lines. Black make sure your hands are clear of the metal parts of the clip, and that the clip tinder hook up site secure.
If you do this, you spark could ignite any hydrogen gas emitted by the battery, causing blqck explosion. Then, you can start the car with the hook battery, and allow it to run for a minute or two. If the battery is really flat or old, you may need to leave the newer car running for a little longer. Only now can you try and start the car with the flat battery. It should fire up pretty halo reach rocket race matchmaking - if it doesn't, your battery might be too old or too flat to take a charge.
Jump start a car battery
Once it's running, you should then leave both cars running for around ten minutes, first the flat battery to charge up. Keep an red on the jump leads at this point — if you get hot, you should switch hook both blsck immediately and allow them to cool down before removing them.
Disconnect the leads in the reverse order of black way you attached them, and keep the clips away from each other and the bodywork. Now, there should be enough charge in the formerly flat battery for you to start it again. Vlack follow the instructions supplied with the pack — this will usually involve connecting up the cables to the correct terminals on the battery, and turning the unit on.