How to Choose a USB Charger

Charge any device through a USB port is all we do, from a camera photographs and mobile phones to tablets have the ability to recharge your batteries through this port.

This constant need to charge our devices led us to many of us to buy external USB Chargers, these boots are acquired in any information store or either through any auction site, eBay we can find an impressive variety of boots for a very few dollars.

How to Choose a USB Charger 1

However very few are the ones who verify that the USB chargers are suitable for devices that wish to recharge.

For example if we talk about quality charger, Chinese boots are famous for exploit, however I have a few and all work very well, in the first instance would seem a matter of luck, but not so much, later I’ll explain why I say this.

When we buy a USB charger, themotorcyclers suggests that you’d better verify the amperage first. This data is essential to ensure two things: the loading speed and the good performance of the team.

Speaking of amperage is the first and great problem to choose a charger.

How to Choose a USB Charger 2

When Intel created the first Consortium to regulate the USB standard, version 2.0 it was established that the intensity of current maximum which a device can drain was 500 Ma, then in the USB 3.0, this version has been modified and increased this value reaching the figure of 900mA.

These limitations are fundamental facing the choice of a charger. Many of the Chargers that we can buy say deliver 500mA however they deliver much less, remember that this value is the maximum required and most devices do not require this power.

The problem is when the connected device needs an intensity of current top that delivers the charger, in these situations is displayed when many cases of explosion, burned equipment, etc.

Ultimately it is important that the charger always deliver higher amperage of the needy by the connected device.

Another common case of problems loading USB devices are HUBs or concentrators.

For example, if we have a USB HUB has 8 outputs and a transformer from 5v 2A (is very common to find this configuration), we have:

2A = 2000mA; 2000mA / 8 outputs = 250mA output.

How to Choose a USB Charger 3

When the USB 2.0 standard demand 500mA output Max. And while these chargers will work well in most situations we have never unlucky enough to exceed 2000mA which gives the transformer.
These USB hubs operate smoothly in cases where devices connectors do not require too great amps. But for your information there are devices, like the iPad , that require up to 2.1a to charge above the total amperage of the example I gave above, and using a single-output, would be 7 more available!

There are many devices that consume more 500mA to operate, an example of this are the external USB drives.

As you will realize choosing a good charger USB is not so difficult if we pay attention to this simple detail.

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