Dead Car Batteries: How Long Should You Charge It?

It’s no secret that a dead car battery can cause huge problems. This is why you’re encouraged to always check its condition and at the same time charge it regularly. You don’t want to be in an embarrassing situation where you have to call a friend or family to pick you up because your wheels won’t work. Charging this power source properly is critical and there’s an array of factors for determining how long you should charge it.

Acquiring knowledge on how to properly charge the power unit of your car offers a lot of benefits and advantage. Apart from being able to save a lot of money from buying new ones from time to time, you will also be able to eliminate the chances not being able to arrive at your destination on time due to a dead battery. If you’re one of those people unsure about how long should you charge it and when you should start powering the engine, then this article is definitely for you.

Factors to Be Considered

Before you start the charge process, it’s necessary that you check the type of battery you have and the kind of charger you’re going to use. You have to be 100% sure that the charger can safely and efficiently charge the unit without causing any damages. You also have to make sure that you check the condition of the power source, the availability of remaining charge, the power of the charge, and the correct settings.
charging car battery
The high capacity car charger would take 4 to 5 minutes in order for it to fill the battery. On the other hand, if you’re utilizing a trickle charger, then charging time might take around 24 hours to be fully charged. As mentioned earlier, you have to make sure that you know its capacity before you start charging – 12V will obviously take more time than a 24V one.

A Simple Computation

Take note as well that the condition of your car’s battery plays a key role in charging time. The older it is, the longer it takes before it reaches a fully charged status. Keep in mind that maintained units that use distilled water and sulphuric acid take lesser time to charge. It’s helpful to understand that a 2Amp charge may take 24 hours to charge a 24V. Meanwhile, a 3Amp charge will take less than 24 hours to charge a 12V unit.
Knowing its reserve capacity is also necessary if you want to know how long to charge it. You have to calculate the amp-hours and this is done by multiplying the reserve capacity by 0.6. For instance, if you have 60 minutes reserve capacity, then multiply 60 by 0.6, and you would have approximately 36 amp-hours at 12 hours rate. Remember these numbers and there is no doubt that you will be able to charge your battery safely and efficiently. Be sure that you check the specification of your equipment and always read the manual first.

Car batteries are complicated, we get it. But every owner needs to have the necessary knowledge about it. And to help increase the lifespan of your power source, knowing when and how long you should charge it - the most basic care, by the way - is highly beneficial.

Related Questions

Can a completely dead battery be recharged?

Yes. Technically, a dead battery simply means a battery that is uncharged. As every car battery is chargeable, you can recharge even a completely dead battery. However, if your car battery failed because of a damage, it is likely that it will not charge again.

How long does it take for a dead car battery to charge?

Charging time can vary from 4 to 24 hours, depending on how many amperes your car battery is being charged with and its size.
On average, car battery chargers have around 4 amps, which results in a 10-hour charging time.

How much does it cost to recharge a car battery?

If you decided to charge you car battery on your own, make sure you have a battery charger or a battery maintainer. If no, go back to question 11 and choose your best battery charger, or make an appointment with a professional. You can also jump start your battery with a friend’s vehicle. As you can see, the options are plentiful, and the price of a battery recharge will depend on many
factors, such as electricity cost, prices of your local car repair services provider and other.
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