And the difference between one and the other can be big, especially when you want to charge a device with a large battery, like a tablet or a 5,000 mAh cell phone. We will see how to tell if a charger is good or bad.
Find out the power of your charger
To find out if a charger is equipped more or less power, you’ll just have to pay a little attention to it. They all have their certifications and data printed on their heads.
Calculating it is very simple, if we look carefully we will see two words, input and to go out
Following the word we should have 2 pieces of information, the voltage and current. This first, as a rule, should be 5V, especially in low consumption devices like cell phones or tablets, we are not talking about computers. And the second value, the current is measured in amps, so generally we will see a 1.0A, 2.0A, etc.
Now with these two pieces of information we can get the power of the same. If, for example, it is 5V and 1.0A, it will be enough to multiply them, which will give 5W, a very common power in heads of Chinese brands or of poor quality. These, as you will have understood, will charge at a maximum so low that it will take hours to top off the battery, otherwise it discharges faster than it charges if we use it, which you also happened at some point.
However, if the numbers tell us 5V and 2.0A, things change, and we are already talking about a 10W charger. It is still low but the speed compared to the previous one varies a lot.
exist chargers up to 100W or more (speaking of small devices), the so-called fast chargealthough with 20W they already take this reference.
The speed at which they will charge will also depend on the device and its limitations, however, when it comes to buying a new head or simply choosing between 2 that are found at home, you already know how to differentiate it and which of them will do it. will give you greater speed, as long as the equipment allows it.
Another detail that must be taken into account is that cables also have limitations. There is no point in using a 100W charger if you take a half-peeled and broken 20 cent Chinese cable.
This will not only generate a lot of waiting time, but it can also cause problems with voltage changes in our batteries, which could degrade them more quickly.
In short, if you are thinking of buying a new charger you already know what to look for, cheap is expensive, so for a few dollars more it guarantees good speed and security for your devices. And if your device was charging very slowly, you may now know the reason, get rid of any 5W heads or you will end up in despair.