# You asked: Can a fully discharged car battery be recharged?

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## How long can a car battery be dead and still be recharged?

Most car batteries that are in good condition will last at least two weeks without needing you to start the car and drive to recharge it. But if you don’t intend to drive your car for some time for whatever reason, you should still start it up once a week to recharge the 12-volt battery.

## How long does it take to charge a fully discharged battery?

Recharging a battery with a typical charge amp of around 4-8 amperes will take about 10-24 hours to charge fully. However, if you just want to boost your battery enough to start the engine, it would take about 2-4 hours—or, if possible, you can use another vehicle to jumpstart your battery.

## What happens when a battery is fully discharged?

In a fully discharged battery, substances in the battery maintain chemical equilibrium without any electrochemical reaction. However, it is possible to return to the state before discharge by causing a chemical reaction that extracts electricity from the positive electrode and gives electrons to the negative electrode.

## Can a completely dead battery be recharged?

It is possible to recharge a dead battery, and depending upon the situation you are in, a dead battery is generally an easy fix, whether you are stuck in your garage and can handle it yourself or you are in the middle of nowhere and need professional, quick, and efficient service in the blink of an eye.

## Can you revive a dead car battery?

Usually, dead car batteries may be revived – at least temporarily – to get you back on the road. However, the accumulation of damage may lead to an untimely demise of your car battery, and this typically needs to be replaced. But as the saying goes, prevention is always better than cure.

## How long does it take to jump a completely dead car battery?

Answer provided by. Jumpstarting your car should only take about 5 minutes once you have the cables hooked up. If it won’t start after leaving it connected for 5 minutes, your battery’s either dead or being jumped wrong. To find the problem, start by checking your cables.

## How do I know when my car battery is fully charged?

To check the voltage you’ll need a voltmeter, which can be purchased cheaply from most major automotive parts stores. Check the voltage of your battery using the voltmeter to help determine your next course of action. 12.6V volts or above – Your battery is healthy and fully charged.

## How long does it take for a trickle charger to charge a dead battery?

If your battery is completely dead, it will take a 1-amp trickle charger 48-hours to recharge it fully; meanwhile, a 2-amp trickle charger could do it in 24-hours. While it’s still going to take a while to recharge your battery fully, it’s a lot more efficient to have it done in half the time.

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## Can I still use a discharged battery?

If this is the first time that it has been discharged, you should be able to fully charge the battery and continue using it, but every time it is discharged below that threshold of 10.5 volts, the damage is done.