This Generator has such specifics:

•1-5kWh expandable with DELTA 3 Extra Battery, DELTA Pro 3 Extra Battery, DELTA 2 Extra Battery or DELTA 2 Max Extra Battery.

•1800W AC output, 2200W (surge 3600W) with X-Boost 

•5 fast recharging methods (AC, Solar, 800W Alternator Charger, Smart Generator 3000 (Dual Fuel), Multicharging)

•5-year warranty