How to make a 220 V 50 Hz battery

At a picnic, there is often a lack of household appliances powered by a 220 V network. By making such a battery, you can power it from it. A DIY battery like this also comes in handy if there are power outages, allowing you to avoid discomfort from this.

Materials:

Battery assembly process

To make a powerful yet compact lightweight 12V 20Ah battery, you need to connect 3 3.7V 20Ah batteries together. Ideally, if funds allow, use lithium iron phosphate batteries.

The batteries are wrapped with heat-resistant electrical tape.

The controller is glued to the side of the battery pack.

The batteries are connected in series to raise the total voltage to 12V and connected to the controller.

Let's isolate.

Next, we take the inverter and disassemble it.

You need to disconnect the socket and liner from it. Next, drill holes in the radiator housing.

Then you need to select a mounting plastic box in which the batteries and inverter will fit. Windows are cut into the box for mounting a voltmeter with an ammeter, a button and a standard socket from the inverter.

Next, ventilation holes are drilled in it.

A fan is installed opposite them. Holes are needed on the opposite wall so that the forced air can pass through.

All equipment is installed in the cut-out windows.

An inverter is screwed to the bottom, and batteries are installed on the side.

Next, the components are soldered.

Drill a hole in the lid of the box for the charger connector.

It connects to the controller.

For convenience, it is better to connect the wires using terminal blocks, if space allows. Thus, we get an external power supply of 220 V, with a voltmeter and ammeter to control charge and discharge.

It is charged with a regular 15-19 V power supply, for example, from a laptop. The device is turned on with a button.

It can be used to power anything within the rated power of the built-in inverter.

There is enough power even for a power tool.

Watch the video

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Comments (2)
  1. Sergey K
    #1 Sergey K Visitors 15 September 2021 20:56
    8
    To begin with, you should ask yourself the question - what exactly might such a battery be needed for? Despite the fact that it can actually output at the rated 220 W, it’s good if it’s 150 for a long time. It turns out, well, just turn on the fan, as in the picture, for half an hour! It is much easier to power phone chargers and laptops directly from a 12V battery, use the same USB fan or car fan, etc. In general, now you have to try hard to find equipment that requires exclusively 220V.
  2. You won't ban us
    #2 You won't ban us Guests September 21, 2021 08:52
    1
    There must be a flow of air between the cells of YOUR battery for heat exchange, otherwise a fire may occur. Next - brushed electric motors can generally operate on constant power, so they have your 50 Hz on the side... Next - you don’t have 50 Hz sin, but a meander, and there are 3rd, 5th harmonics... this will kill the fan insulation, it’s easier to use a fan for 12 soldering irons there are also 12 so