Off-Grid Power Basics, by “James Dernier”
Electricity 101: Electricity is fundamental to our first world every day life. We know electricity mostly in one of two forms in the home, from the wall, and in a battery. The electricity that comes out of the wall is high voltage (~110-120 volts [JWR adds: alternating current (AC), in North America–except Mexico, which uses a more macho 127 volts] AC), relatively low amperage, and alternating current. The electricity that is stored in batteries comes in a variety of voltages and amperages but is always direct current (DC). Size AA batteries are 1.5 volts, along with most other battery types, …