How to choose the best portable charger for your smartphone

Power and portability. Here is a list of how to choose the best portable charger for your smartphone according to your needs

The battery of your phone or tablet tends to last less and less as you use more and more apps and online services. For this reason, the purchase of a portable charger is essential in order not to be left without a battery outside the home. But what features should we check before buying one?

Power banks allow us to recharge our devices without the use of an electrical outlet. They are ideal when we are travelling or during a long day at work or doing research for our studies. There are many different portable chargers with different power, shape, weight and size. Some even have cables included and others have multiple ports to charge multiple devices at the same time. In short, if you don't have a lot of knowledge, it's not easy to choose the best charger. Let's see how to do it.


The essential aspect of course is the power. Having a portable charger that can't even fully charge our phone might be useless if we have to stay out of the house for a long time. Similarly, if we just need a small hand to get to the evening then it could be fine. As always, everything depends on our needs. That must be evaluated well not to spend our money in vain. To understand the power of the charger we must check its mAh, or milliamper hour. The most common sizes range from 2000mAh up to over 30000mAh. Obviously the higher the power, the higher the cost. Small 2000mAh chargers will provide a 50% charge to a smartphone. Although this factor depends on the total battery capacity of the phone. So they are recommended more for small devices like GoPro, Kindle and Bluetooth headsets. A charger with 10000mAh instead will guarantee your smartphone between 3 and 4 recharges. Always pay attention to compatibility, otherwise the phone's battery could be damaged by the use of these devices.


A charger, whether for a tablet or smartphone, should first of all be easy to carry. Having a power bank that is very powerful but too heavy may be useless. It always depends on our needs. If we need a charger for a trip or for work away from home then it is much better to opt for lightweight solutions that fit in a pocket and don't weigh in a suitcase.

Output power

Another aspect to consider is to understand the output power of the charger which will affect the speed at which smartphones will be charged. Moreover, this aspect is to be considered especially if we are used to charge several devices at a time. Otherwise, if the power output isn't enough, we won't get good results on any of the devices we're charging.


Do we only use our smartphones or do we also need to charge our tablets and accessories? And why not buy a nice power bank for the whole family or to use on a trip with friends? Again, it's our needs that make the difference. Chargers with multiple ports, to simultaneously recharge more devices, require more power and therefore cost more. But they are essential if we want to use them with more people.


A secondary aspect to take into account is the presence or absence of cables and connectors. A power bank must always have a cable for connection to the power outlet. Less useful are the USB connection cables with smartphones and tablets. In this case it would be better to use the official ones of the device.


When talking in terms of charging the portable charger it is important to keep some numbers in mind. The input of a power bank ranges from 1Amp up to 2.4Amp. This means that the higher the amps, the faster the charging will be.

Protections and certification

There are a number of aspects to be preferred on a portable charger. First of all, the efficiency, that is, the working temperature of the charger. It is important that it does not overheat causing injury to people or devices. And remember that at extreme temperatures, both hot and cold, it is not recommended to use these devices. Finally, we buy only certified devices.