Mostly each device which has micro USB port is shipped with a micro USB cable (many are shipped without a charger). For a long time, I used these cables to charge my gadgets, simply because I had enough different cables here and there. I put one in my car to charge smartphone on the way.
Later I purchased a tablet. Tablet was also shipped with a USB cable, but with very short one. Something about 20 cm. Using that short cable for charging was not very comfortable and I used one of my universal cables instead. I immediately discovered that tablet charged much faster with its own cable than with another “usual” cables I had. That was interesting, so I decided to test. I found an android app called “Ampere” which showed charging parameters. The app proofed my observations – there is a huge difference between tablet cable and others.
The point is: different USB 2.0 cables can support either 1A or 2.4 A charging. And all of them are still USB 2, without special labeling.
Wikipedia describes this following way:
“Battery Charging Specification 1.2:Released in December 2010.
Several changes and increasing limits including allowing 1.5 A on charging ports for unconfigured devices, allowing High Speed communication while having a current up to 1.5 A and allowing a maximum current of 5 A.”
So, there are several different standards still called USB 2 – not that nice.
“Supported amperage” – is a very important parameter, however, it is usually not mentioned on the cables which shipped with a device. Even when you explicitly buy an USB cable, you often do not find amperage in the item description. This is crazy chaos.
Actually, the situation is even more complicated – real charging performance depends on a cable, charger and a charged phone, but this is already another story.
- promised 2.4 A charging
- was cheap enough
- looked solid
This cable was from “Syncwire”. I’m sure that there are other good brands, but if you want – you can find Syncwire on Amazon by http://amzn.to/2u1eZxd.
When cable arrived I tested it and found that it worked really well – charging was fast, what was especially visible when I charged my tablet.
My Moto G uses up to 1.3A during charging, but I still discovered that with Syncwire it was charging during navigation. However, with another cable, I had in a car it slowly but lost power. Moreover, already 2 “usual” cables are broken after being used in a car for some time.
Now I bought second Syncwire pack and have 4 good cables – 1 for my car, 3 for home regular usage. This covers my needs. All other USB
cables are packed away.
Interesting, that none of the cables shows something even near to 2A with my moto g, however, the difference is dramatic.
The investment is about 15 Euro. But now I do not need to care about what cable to use.
Definitely, all this makes sense only if used charges support 2.4 A as well.