The EcoFlow DELTA Pro Portable Power Station allows you to power devices, appliances, and tools when the AC grid isn't available, storing and delivering 3600Wh of power through AC outlets, USB ports and other connections. You can monitor and control the power station from your phone running the EcoFlow app, via Bluetooth. The 3600W output can double to 7200W for momentary surge start-up requirements in some tools, and can deliver 4500W, with lower voltage for some devices. The DELTA Pro can be charged by AC power in under three hours. It can also be charged using solar panels, a vehicle DC output, an electric vehicle charging station, the EcoFlow Smart Generator, or the EcoFlow 800W Alternator Charger, all of which require additional purchases.