How long do you predict that the Oxford Electric Bell will ring?

This experiment and project are based on two brass bells positioned below a dry pile, which is a type of battery. The pair of piles/batteries are connected in a series connection. There is a clapper which is a metal sphere of about 4 mm suspended between the two piles. This rings the bells due to the electrostatic force.

As the clapper touches one of the bells, it gets charged by one of the piles and thus electrostatically repelled. Some had thought that this item would demonstrate perpetual motion, but it does not. This idea of perpetual motion has fascinated people for such a long time. If such a machine could be produced, then that concept can be transferred to various other items as well. We could have unlimited resources.