1. The act of borrowing fresh battery packs from 1 working product to run that another. 2. The work of swapping the great electric batteries from a working product with all the dead batteries of another unit so that you can use the product that initially contained the lifeless batteries.Most usually applied with AA or AAA batteries in remote settings. 9 volt battery cannibalism is extraordinarily cruel as a result of expenditure and decreased extra 9 volt electric batteries in your home.