During massive long-term power outages, many people think about alternative lighting sources. At the same time, it is desirable that they do not discharge too quickly. And this option does exist.

A way to create a durable flashlight made of LED and ordinary batteries was described on his Youtube channel by user Sasha Ternopilsky. In a week, his life hack has garnered as many as a million views and a lot of grateful comments. To watch the video, scroll down to the bottom of the post.

This flashlight does not require a generator, solar panels, or any other power source except a pair of AA or AAA batteries. The light source is an ordinary 5 mm transparent white LED of 3 V.

What you need to assemble an emergency flashlight

• 3 V LED;
• AA or AAA batteries - 2 pcs;
• adhesive tape
• copper wire
• soldering iron;
• solder.

A pair of batteries should be stacked so that their "pluses" and "minuses" do not match, solder one edge with copper wire, and solder a diode to the other, taking into account its poles. The diode would immediately start glowing and, according to the inventor, would work on good batteries for over a year. It will not lose its performance either in conditions of high humidity or at very low temperatures.

There is an even simpler option, although it does not look as reliable, but its advantage is that you do not have to solder.

As OBOZREVATEL wrote, you can assemble a home heater powered by a candle with your own hands.