EcoFlow had the Delta Pro Ultra loaded up on a cart at CES so you could wheel it around. It's surprisingly easy to move a nearly 200-pound battery. Jon Reed/CNET. Powerful and flexible.

A single Delta Pro Ultra from EcoFlow costs $5,799 and scales up to 90kWh of battery capacity, 16.8kW of solar input, and 21.6kW of AC output, which is enough to power central air conditioners.

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Check out this great deal on the EcoFlow DELTA Pro Portable Power station, now available for $700 off on Amazon. Use it as a backup power source at home or as a major camping upgrade.

EcoFlow’s Delta Pro 3 is a flagship portable solar generator that can scale from 4kWh and 4000W of 120V/240V output to a whopping 12kW of output and 48kWh of storage.

The EcoFlow Delta Pro Ultra inverter and battery kit will be available for for $4,999, and the Smart Home Panel 2 (which integrates the Delta Pro Ultra with your home) available for purchase at ...

That means if I use the Delta Pro Ultra’s full capacity (90% of 6.14kWh because it won’t let you use 100%) in a single day, I can save a maximum of 94 cents per day, or $343 per year.