Does amperage matter when charging a battery? (Solved).

There are a lot of factors that go into charging a battery, and amperage is one of the most important. Amperage is the measure of electrical current, and it is critical to understand when charging a battery.

A higher amperage will result in a cooler, steady power supply and shorter charge time, while a lower amperage can cause the charger to overheat.

We recommend always using a charger with an amperage that is equal to or greater than your original power supply. This will prevent any damage to your device.

In this blog post, we will discuss what is amperage and how amperage matters when charging a smartphone or a laptop.

What is amperage?

Amperage is the strength of an electric current often used to measure charge or you can say amperage is the measure of how much electricity is flowing through a circuit.

The higher the amperage, the more electricity is flowing. Amperage is the defining factor of how quickly your device will charge.

This also depends on the device itself too on how much amperage it can accept and can utilize.

For example, if you have a device that can utilize 2 amperes and you’re using a charger that supplies 3 or 4 amps, then the device will only use 2 amp and the rest will have no effect.

How does amperage affect battery charging?

As we all know, battery capacity is measured in mAh (milliampere-hour) which is amperage over time.

A charger with a higher amperage means that more electricity can flow through the wires to charge your devices faster

For example, let’s say. Does it matter how you fill your water cooler?

No, You probably can fill it in your kitchen sink easily, but if you have a garden hose or a water pump, it will take less time to fill the cooler. It’s the same idea with amperage and battery charging.

A higher ampere charger charges your device’s battery faster than a lower amperage charger.

Using higher amperage

Using a charger that has more output amperage than the device need is always the best way to go to charge your devices faster and the overall health of the device.

A higher amperage charger will supply the power the device needs to work properly and will also keep it refurnished especially if you are using it while charging.

So, we always recommend using a charger with an amperage that is equal to or greater than your original power supply. This will prevent any damage to your device.

RELATED ARTICLE: Using a higher Amps charger than the original: Bad?

Using lower amperage

Using a charger with an amperage lower than what is recommended can cause your device to not work properly.

It also will take longer to charge your device and in some cases, it might not charge at all. Another problem that can occur is the charger itself can overheat and damage both the charger and your device.

You should avoid using such a charger especially when you are using your device while it’s plugged in. This can cause the heating to occur more quickly and damage your device.

So, we recommend avoiding using a lower amperage charger whenever possible.

RELATED ARTICLE: Using a charger with lower Amp than original: Any Good?

Is higher or lower amps better?

Using a charger that supplies higher amperage is much better than using one with low amperage. It will charge your device faster and keep it healthy too.

We only recommend using a lower ampere charger if you don’t have any other choice or if the device can work with it without any problems.

You should avoid using such a charger whenever possible to prevent any damage to your device.

What happens if you charge a battery with too many amps?

All the modern devices are built in a way that they can control the amount of amperage that can enter into the battery this includes both smartphones and laptops.

Even the modern charger that comes with the devices these days also control the output amperage.

You can not supply the device with more amps than it can accept the only way this is possible is if you use a charger supplying high voltage which will cause too many amps to flow and can result in heating and damage to the battery.

So, make sure to check the voltage before buying the charger.

RELATED ARTICLE: Wait-Will too much amperage hurt a device? 

What happens if the amperage is low

When it comes to current, you must make sure that the Amps rating is greater than the device requires since it will only consume as much power as is needed.

It is best to avoid a charger that is supplying too low amperage.

If the rating is too low for the equipment, it will attempt to draw more electricity from the supply than the supply can provide, and it will get hot and perhaps explode.


When it comes to amperage when charging a battery the amount of amperage you are supplying does make a lot of difference and it surely does matter.

You should use a charger that supplies amperage equal to or greater than your original. This will help prevent any damage to your device and ensure a proper charge.

Using a lower amperage charger can cause problems such as overheating and damage to both the charger and your device. It is best to avoid it.