How did Sir Humphry Davy demonstrate an early electric arc light?

In 1807, Sir Humphry Davy constructed the first arc lamp to demonstrate the production of light via an electric arc. To achieve this, he utilized a powerful battery consisting of 2,000 cells. By connecting this battery to two charcoal sticks, he successfully maintained an electric arc across a 100-millimetre (4-inch) gap between the conductors. The resulting light was produced by both the arc itself and the intense heating of the ends of the charcoal rods.1