Which type of current is obtained from a battery?

A battery is a source to Direct Current (DC). It provide a constant value of current which does not change with the time. This is because in a battery there are two terminal one positive and one negative and the current flows only from positive terminal to the negative terminal. It flows in one direction only that is from positive to negative which is the characteristic of DC current. Hence, that is why battery is source of DC current.

If the current varies its value that is positive to negative and negative to positive then the current is said to be Alternating Current (AC).