How long does charging a 12V car battery at 2 amps take?

car battery

A battery is an essential component of your car and without a car battery, it’s not possible to move your vehicle. The word dead battery is very common in the motor industry. A dead car battery will make you miserable especially if you are stuck somewhere with no way out.

An element that can increase the lifetime of your battery is a battery trickle charger. The major capability of these trickle battery chargers is to keep on running your battery for a longer duration. Even if you fall short to utilize a car’s battery for a longer period, it aids your car’s battery to have the charge that it needs to start.

Can trickle charger charge dead battery?

Before thinking about the answer to this query, let’s first comprehend what’s a trickle charger? Basically, a trickle charger is responsible for slowly charging your battery yet at a consistent speed. Since it has low amperage, it creates a sluggish rate of charging. A typical trickle battery charger creates a 1 to 3 amps charge. But a trickle charger is not the same as a traditional car battery charger since it restores the power that is lost within a particular time. This aids the car battery from being completely dead.

The operating principle of trickle chargers coincides with that of a typical car charger. The only distinction between a trickle battery charger and a traditional one is that it generates an electric current at a less rate. This prevents your battery from overcharging whereas the conventional car charger charges at a fixed voltage. As a result, it can cause overheating and overcharging issues in your car as well as eventually damage it and the other parts of your car.

The simple answer is yes to the question whether a trickle charger can charge dead batteries. Nonetheless, it will certainly take more time before it can bring back the dead battery to life. In case you charge a 12V battery with a trickle battery charger that creates 1 to 3 amps of current, it will certainly take 20 to 24 hrs to charge it. The reason is that a car battery has 48 amps and it takes 1 amp of charge for every hr.

Although, the main goal of a trickle charger is to maintain a battery in a risk-free condition even when it’s not made use of for a long time. Another benefit of using a trickle battery charger is that it maintains the battery in immaculate condition.

car battery

The length of time you can leave a 2 A battery charger on a battery

To find out this time, you require to think about a couple of variables. Before looking at the factors and making an estimate, you should comprehend that the car battery’s capacity is 48 amp-hrs.

You can even utilize a trickle charger to maintain the charging of a battery at the optimum level. Prevent quickly charging of a battery to start it instantly. Charging a battery at 2 A is great for a longer period as the trickle battery charger will preserve the standard charge needed to start your car. Rapid charging a car can be harmful because it might harm the battery plates and cause wear and tear.

The factors that identify for how much time you can leave a 2A charger are:

Upkeep: Before charging the battery, make sure that the electrolyte levels in a battery are alright. Make certain to fill it up before continuing with charging if there is a lack of electrolytes in the battery charger.

Check the battery’s temperature: Whilst charging, you should keep in mind the right temperature of a battery. Often you can observe overheating in the batteries. It is smart to examine the battery’s wiring to overcome this problem. Although it’s really natural for a battery to produce some heat throughout the charging procedure, the battery needs to additionally cool down after the determined charging time. You should make sure that a battery goes to room temperature for safety and security.

Check open circuit voltage with a voltmeter: The term open circuit voltage implies the voltage rating of your car’s battery when it’s not running. It additionally indicates that a battery is on no load capacity, and you might be able to measure it with a voltmeter. Ensure that a battery isn’t on a charging setting while measuring the dimensions.

Determine the amp hrs of a battery through its reserve capacity: The first significant element you require to identify is discovering the amp hrs of a battery. So, first, discover the reserve capacity of a battery. This info is readily offered in the supplier’s manual or in the instruction manual. You can also conveniently calculate the amp hrs of a battery’s reserve capacity by multiplying it by 0.6.

Can you charge a car battery at 2 or 10 A?

Charging a battery at 2 or 10 A is troublesome for numerous car owners. Nevertheless, you have to keep in mind that if you do quick charging of the car battery, it might cause damaging effects to your car. It might harm the various other elements of your car.

The car battery has a 48 A current. This means that a 2 A charger will take around 24 hrs to completely charge a car. In contrast to this, a 10 A charger just requires less than 5 hrs to charge the same car.

This is the factor lots of car professionals believe is absolutely all right to supply a 10 A battery charger for a car battery. The primary objective of utilizing this charge is to provide a full charge to your battery in addition to not harming the car or its elements.

Hence, it is advisable to utilize a 10 A battery charger to charge the car’s battery.

Related Posts


Our team of dedicated Battery specialists can help!

Subscribe To Our Newsletter

Ready to use battery Expert knowledge right in your inbox
Scroll to Top
Scroll to Top