It is my conclusion that the human mind and body is essentially a single cell rechargeable battery that is charged from the atmospheric DC voltage and the Earth.

The top thing that uses up your cell phone battery is the data system. Turn it off and your cell phone battery will last longer.

When buying a portable car jump starter, know the amperage of your car battery andbuy a jump starter that has a higher amperage rating.

During COVID-19 I was using my car so infrequently that I had to charge the battery every month to prevent it from going flat.

I would run down like a battery during several extreme night shifts atop the very high altitude summit of Mauna Kea in Hawaii.