If you are a travel company, whether near or far, you will spend some time on the road. Sometimes we talk about hours, sometimes it's a day. And on the street you have to deal with something. Until recently, books and magazines were successful. Where else could you quietly read an interesting article knowing that you don't have to rush to work and unfinished things don't hang over you with a Damocles sword as if you weren't on a train? But somehow print publications are becoming less and less of our companions on the street.

Suffering banks are considered the first batteries. They were invented in 1745 and became the subject of careful research by scientists. After the abolition of witch persecution, people became interested in mysterious phenomena. The term "battery" was introduced by Benjamin Franklin due to the similarity of a number of cans to the position of the artillery.

Depending on what is to be loaded from the portable charger , the device with the appropriate nominal capacity must be selected. If you need to charge the phone throughout the day, an external battery with a capacity of 1000-4000 mAh is suitable, which is sufficient for one or a little more charges. Select a battery with a capacity greater than the internal battery.

It was created in the 19th century and made it possible to introduce electrochemical atoms of matter into the crystal lattice of another. In lithium-ion accumulators, the ion migrates back from the positive electrode to the negative electrode during the charging process and when the load is switched on. Initially such devices appeared due to the guilt of Sony in the 90s of the XX century and were called rocking chair. This was a prerequisite for the creation of mobile devices.At the same time, this device has several outlet points, which allows charging several devices at the same time. At the same time, the charging power of each unit of equipment will be the same.