Diesel Powered: power supply 100% from integrated diesel generator; Battery Powered: power supply 100% from integrated/rechargeable battery pack; Hybrid System: a power supply alternating battery working cycles with diesel recharging cycles, in automatic; Plug-In: plug the PRO into an external power source and it’s ready to work while charging batteries. The operator has just to choose the desired working cycle with a simple switch on the control panel and it’s done: the digital controller will adapt the machine to the selected option. The great flexibility of Generac Mobile® PRO does not stop at these innovative working cycles, but also integrate important innovations for charging the battery pack from external sources such as: