is a battery ac or dc

A battery is unequivocally a source of direct current (DC), not alternating current (AC). It delivers a steady, one-directional flow of electrons, unlike the fickle alternating nature of AC used in household power outlets. Batteries store chemical energy and convert it directly into electrical energy with a fixed polarity. So, if you were hoping to plug your battery straight into an AC appliance without a converter, think again. For official specs and detailed explanations, consult the manufacturer’s documentation.