Do not dispose of the battery of your old phone

Let's first find a red and black thread.

Then connect with the solder

This is how the Russian engineer connects the red cable and the black cable.

After connecting the cable, we move on to the next step.

We stick glue on the battery and find four other older Nokia phones.

We stick them that way.

Let's stick to the latest Nokia battery and …

It's done! Let's move on to the next step …

In the same way, we also perform welding of these batteries.

Then we connect these cables to each other.

We also cover with electrical tape.

We find a small plastic box or tin.

We put the batteries in

Then we will need a small card on the USB port.

Then we put glue on the blanket that you can find in a pet bottle.

We put this cover under the USB card.

After the card was mounted, it was time to open the appropriate holes.

We are now moving to the final phase and we are establishing the cable connections.

We now have a new portable charger!

And he's already charging our phone!