Because of the chemicals and metals which are used to make it, a battery can only produce dc (direct current).
For the same reason a battery cannot produce ac (alternating current) on its own, but it can be connected to another device, which is called an invertor, to produce ac for use by devices which require ac instead of dc.
Many of the devices and other pieces of equipment to which a battery can be connected will only work on direct current (such as, for example, car starter motors) but some things (such as light bulbs) can work on either dc or ac.
Some batteries are rechargeable but they cannot be recharged using ac . That is why all battery chargers which are designed to plug into house ac power sockets must convert the ac to dc.
For more information please see the answers to the Related Questions shown below.
The term DC or direct current is really a little misleading, However DC refers to the potential difference in an electrical charge from positive + to negative -. In the case of direct current the current is constantly from positive to negative or in one direction so to speak. In the case of an alternating current the current is constantly changing direction from positive to negative to positive to negative and so forth.
A Direct Current or DC direct current is a current consisting of charges that flow only in one direction.
It's called Alternating Current (AC) as opposed to Direct Current (DC/batteries).
Batteries and generators provide DC, Direct Current electricity.
Direct Current. His opponent, Nikolas Testa, wanted Alternating Current.
There is two types of current. Direct current and alternant current. The one running in only one direction is Direct current.
Direct Current
Rectification
direct current
A Direct Current or DC direct current is a current consisting of charges that flow only in one direction.
direct current.
Direct current circuit.
flow of charge
It's called an inverter.
It's alternating current
A diode or rectifier converts AC to DC.
(a) A current flowing in one direction only; -- distinguished from alternating current. When steady and not pulsating a direct current is often called a continuous current. (b) A direct induced current, or momentary current of the same direction as the inducing current, produced by stopping or removing the latter; also, a similar current produced by removal of a magnet.
DC or direct current