Skip the fuel and get quiet, portable power to run your appliances and mobile devices. Charges through a 120 V AC wall outlet or optional solar panel (sold separately). Convenient Operation Able to parallel two or more panels for quicker charge (max 240 Watts input) or combine multiple units or similar batteries for increased run times. Safe Design With no engine or need for fuel, enCUBE™ is a clean power source with zero emissions. Silent Operation It can be used indoors during power outages and offers quiet ambient sound levels. Zero Emissions enCUBE is the fuel-free alternative to portable power, so it can be used at home or when you're camping, hunting or on the job. 3 Year Parts and Labor Limited warranty 90 - days for professional use. No hour limit.