What is Battery ?

the right circumstances. When electrons flow,

this makes an electrical current that can power something.

say you want to run a 250 watt 110VAC light bulb from an inverter for 5 hours

Amp-hours (at 12 volts) = watt-hours / 12 volts = 1470 / 12 = 122.5 amp-hours.

What a battery does is put the right chemicals in the right

battery is connected to a circuit

relationships, and then puts a wall between them..

Self-discharge is a phenomenon in batteries in which internal chemical reactions reduce the stored charge of the battery without any connection between the electrodes.

Self-discharge decreases the shelf life of batteries and causes them to initially have less than a full charge when actually put to use.

. Only when the two sides of a battery

circuit and back into the cathode

connected by a wire or another

In the ideal/theoretical case, the time would be t = capacity/current. If the capacity is given in amp-hours and current in amps,

conductor can the electrons flow

time will be in hours (charging or discharging). For example,

where another chemical reaction takes place

Batteries come in several styles;

100 Ah battery delivering 1A, would last 100 hours. Or if delivering 100A, it would last 1 hour.

you are probably most familiar with single-use

In dry cell battery converts chemical energy into electricity. The chemical reaction produces electrons,

chemical reaction takes place.

alkaline batteries. NASA spacecraft usually use

which then collect at the negative terminal of the battery. When there is a connection between the positive and negative terminal,

rechargeable nickel-cadmium or nickel-hydride batteries like

the battery is unable to produce electricity.