How Long Does It Take To Charge a Car Battery While Driving

by John Brown | Last Updated: 10/12/2019

You have just realized that your car battery has died. But, you have places to be and the nearest charging station is a bit far away. You don’t have the time to charge the battery. So, you have finally decided to charge the battery. In this article, we will see the different ways through which it is possible to charge your battery.  

charging battery while driving

How Long Does it Take to Charge the Battery?

The reason why many people are determined to find out the time required for the charging of the battery is that all of us are living a busy life full of commitments. Sudden trouble like the uncharged battery can be quite frustrating. You cannot possibly postpone your meeting because you have just found out that your car doesn’t have proper charge. If you are among those people who are worried about the time your car may require to get a refill, this article is just for you. Have a look:

1. How long to charge a car battery at 40 amps?

The 40 amp charger is the best way to charge your battery. Not only it will charge your battery quickly, it will also allow you to start the car within a few minutes even when your battery is depleted. Another advantage of a 40 amp charger is that it also helps the person in jump starting the vehicle using jumper cables.

2. How long does it take to charge a battery with a trickle charge?

If you are leaving your car in a garage for extended periods, it is a good option to use a trickle charger for recharging your battery. The charger works at around 2 amps and takes at least a full day – 24 hours – to charge a 48-amp batter to an acceptable level. However, it is important to note that the time taken by the charger depends on the condition of the battery as well. Trickle charges mainly maintain your car battery and ensure that it doesn’t die down. Even though they take a long time to charge the battery, they get switched off automatically when the charge is full.  

3. How long does it take to charge a dead battery?

Having a dead battery in the middle of your journey is a nightmare. But, don’t worry, there are some ways that can help you revive your battery for good. Normally, it takes somewhere between 4 and 24 hours to fully charge a car battery. However, it also depends on other feature including the size of the battery and the number of amperes it is being charged with. A 52Ah battery getting charged with a 4amp charger takes 10 hours to get fully charged. However, the engine will start after one hour of charging.

4. How long does it take to charge a battery while you’re driving?

There is not a definite answer to the question. Obviously, the amount of time required to charge your car while driving depends on the battery you had before you start driving and your driving style. Normally, if you keep your engine RPM up, the alternator will charge the battery at a faster rate. On a motorway, for example, you can charge the battery in 30 minutes.