Emergency power supply for your home: The Delta Max can be expanded with smart additional batteries up to 6 kWh, ensuring your house is powered in any emergency. Dual fast charging: Charge your Delta Max from 0-80% in just 65 minutes. Alternatively, achieve a power output of up to 3400 W by combining AC charging with the EcoFlow Smart Generator. Power supply for multiple devices: Looking for a solution to power high-demand devices like your refrigerator and dryer? With the X-Boost feature, the Delta Max easily handles devices up to 3400 W. Portable solar generator: Stay powered no matter what happens. The Delta Max can be connected to up to 2 EcoFlow solar panels, each with a power output of 400 W, to achieve a maximum solar charging speed of 800 W. The solar charging cable is not included with this product.