Genuine Acer Predator G9-791 chargers are listed below, always use an original Delta G9-791 charger designed and manufactured for the performance and power needed to run your high performance laptop or gaming notebook, as the high specification within each model of laptop, generally means it needs the full 180w of power and Delta power supplies made for Acer Predator allow you out to output the maximum power of 19.5v 9.23a if running your machine at the maximum it can take.