At its most basic a car battery is constructed of alternating plates of dissimilar metals usually lead and lead oxide pb and pbo 2 in an electrolyte bath usually sulfuric acid h 2 so 4 in water. Then connect one end of the cable to the positive terminal of the donor battery and then connect the.

How To Charge A Dead Car Battery Via Wikihow Com Dead Car Battery Car Battery Car Battery Hacks

What should you do with a drained battery.

How to charge a car battery that is completely dead. Do this before you plug in the charger. All you can do is check the electrolyte and put it on a trickle charger. Read the instructions that come with.

Install charger install the battery charger to the battery starting with the positive terminal and then the negative. Plug in charger plug the charger in and follow the manufacturer s recommendations on how to charge the battery. If money is not an issue you can get a charger and starter at the same time.

Many battery chargers deliver two to six amps some allow you to choose the amperage level and will take at least several hours to recharge a dead car battery. All you need is a 1 5 or 2 0 amp 12 volt charger. You will then have the ability to connect the batteries to one another using the jumper cables and recharge the dead battery by transferring energy from the functional battery.

They cost a little bit more but they allow you to do a 2 0 amp slow charger a fast 10amp charge and a 75 amp or higher setting which is used for jump starting. To revive a dead battery first make sure each car is in park or neutral and turned off. Below 12 volts use a dedicated charger your vehicle s alternator can keep a healthy battery charged but it was never designed to completely recharge a dead car battery if the unit in question reads below 12 volts.

Car battery death for the purposes of this article refers to the battery s inability to hold a charge usually caused by sulfation. Most chargers will do this automatically. Watch kent s complete car battery clinic series.

If you have a side post battery you may need adaptors to do this. Once a car battery has been drained below a state of full discharge the damage has been done. In order to charge a dead car battery a set of jumper cables and a functional car with a charged battery is required.

At least 30 minutes of driving will help charge the battery back to a safe level for your next start.