In everyday life, it often happens that it is necessary to charge the smartphone, and there is no sockets nearby. In such a situation, there is a risk of staying without communication for several hours. For many people, this is unacceptable today. The solution of this problem may be a compact relief. Such can be purchased, but you can make it yourself from the remedies.
Preparation
The most important element of the design.
To create your own beliefs, you need to prepare some materials and tools. Be sure to need a second glue, a stationery knife, a ruler, scissors, two wires (black and red), as well as a piece of USB cable. A soldering iron with a flux, cold welding glue and the most importantly - charge controller, for batteries with voltage 3.7 volts.
The working process
That's how everything looks like a scheme.
The main element of any beliefs is the charging module. The easiest way to find such an online and order somewhere in China. The module must have a Micro USB connector, as in the phone. Input power 1 A, voltage - 5 V. The role of the exit takes on the muddy contacts in the number of two pieces. It is also worth emphasizing that Chinese modules are quite reliable.
We solder wires.
First we solder to the exit of the wire. For the plus we take the red wire, and for minus - black. Now we measure the dimensions of our module and select a suitable case for it. Most likely you have to make it yourself. This will require plastic and glue. The module must be placed on glue into the case.
Most will have to clutch with the case.
It needs to be done so that it is to be closed with a housing. Close glue only on the reverse side of the board, where there are no important elements. On the outgoing wires it is recommended to install shrink tubes and "squeeze" them with a lighter.
You can make this lightweight version with magnetic contacts.
Now it remains only to connect the charging module to the power supply. For example, to batteries or batteries. You can also make the most mobile version of charging, for this you need to solder neodymium magnets to the endings. This will allow for operational charging a separate battery or battery from the store.