Who has his car, He repeatedly encountered the problem of finding a source for charging the battery. It seems to be not problematic to buy it, but why, if charging can be done from a computer power supply, which is probably lying around at home or with friends.
Watch the video and you will learn how to quickly and easily make a charger from the power supply
The advantage of homemade charging is that it is very light and works in automatic mode. It can charge currents of 4 or 5 milliamps. The largest battery capacity is 75 amperes of hours or less. Charges our device with a bang. The device works fully in automatic mode, there is protection against overtaking and there is protection against short circuit.
On the case we need to make a recess for a standard network cable and a switch.
On the back of the case we have wires. The wires come with terminals or clamps so that you can connect them to the charger or battery.
Also, do not forget to connect and put the power indicator on the case. If the light is on, it means that the device is working and gives out voltage.
Our device produces 14 volts, this can be checked on a special device by simply connecting our battery to it.
If you want to know how much ampere current such a device gives, then connect it to the battery and check everything on the ammeter. If the battery is completely discharged, you will get 5 amperes, when the battery is charged, only 3 amperes will come out.
There is not much rework in this charge, the maximum will take 2 hours of your time, but only if this power supply is made on a TL 494 chip.