Yeah, there will be sparks, no, I don't lay on the battery while connecting it, in fact, I turn as far away from the battery as I can and stand as far away as I can while making the connection. I may be wrong here, but I'm under the impression that a happy, properly charged battery is producing less hydrogen than the dead one, so now I hook up the black to the dead one and head back to the charged one to complete the circuit. Now I feel better, I hate having the reds dangling because the whole car is negative, red on one, other end touching a chassis? That's a short, and with the amps these things throw out, now you're welding. In practice, this method hasn't worked well for me, due to picking the wrong spot, paint, corrosion, and impatience (it's usually the dead of winter when I find myself jumping a car), so I do this:īoth cars should be off, starting with the working car, both ends of red in my hands to ensure they're clear of touching anything (including me) red, move to the dead car, red. You'll get sparks no matter what, what this post is attempting to do is to get you to make those sparks away from the battery, which has a small chance of exploding due to the hydrogen it produces igniting. The chance of a battery explosion is extremely high!īlack goes on the negative terminal.if you were charging (or jumping) NEVER TRY TO JUMP START A SUSPECTED FROZEN BATTERY. If it's extremely cold, it is possible for a completely dead battery to freeze. There is one thing the OP did not mention that I want to point out ,especially for this time of year. The alternator's regulator automatically current limits to protect it from overload. Even small cars have 60-amp alternators and most are now over 100-amp continuous. Running the engine while starting the other car won't hurt the alternator. Unless the battery is totally dead, charging for five to ten minutes is usually enough to get it going. Most jumper cables just aren't big enough to carry the starter load so you've got to get some charge into the weak battery before you can get the starter motor to turn over. And, at least from my experience, trying to start the car with the weak battery with just the jumper cables to the "good" battery won't get the job done. You usually need to run the other "good" car to charge the weak or dead battery, as the "good" battery by itself can't provide a high enough voltage to the weak battery for it to charge. I mean, this is a possible (but extremely rare) problem but it's not related to jumping another car off.
Severe overcharging (vehicle system voltage way too high) can cause excessive electrolysis inside the battery and lead to a build-up of hydrogen and oxygen which can cause an explosion within the battery, but the excessive pressure would pop the safety vent first most likely. Note: Bans will not be reversed if the post/comment in question has been deleted from your history. You may appeal this initial ban by messaging the moderators and agreeing not to break the rules again. Note that moderators will use their own discretion to remove any post that they believe is low-quality or not considered a LPT.īans are given out immediately and serve as a warning.
#RED POSITIVE BLACK NEGATIVE BATTERY PRO#
A Life Pro Tip (or an LPT) is a specific action with definitive results that improves life for you and those around you in a specific and significant way.
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