EcoFlow DELTA Pro vs DELTA Pro 3

Wall input is the headline change from the EcoFlow DELTA Pro to the DELTA Pro 3, at 4,800 W against 3,000 W. That takes the DELTA Pro's listed 1.8 hours for a full refill down to about 0.85 hours on the Pro 3. Capacity rises from 3,600 Wh to 4,096 Wh, AC from 3,600 W to 4,000 W, surge from 7,200 W to 8,000 W and solar from 1,600 W to 2,600 W. Weight climbs too, from 99 lb to 113.54 lb. Both are current models, so this is a choice between two models still sold new by the maker.

Wall and solar charging

Beyond the wall figures, solar input grows from 1,600 W to 2,600 W, with a full-input refill of about 3 hours on the DELTA Pro and 2.1 hours on the Pro 3. The voltage window changed at the bottom: 11 V to 150 V on the DELTA Pro and 30 V to 150 V on the Pro 3, with 15 A on both. Panels that deliver under 30 V sit outside the Pro 3 window.

Runtime

More capacity means longer runs. The estimated usable energy is 3,060 Wh against 3,482 Wh. A refrigerator lasts 33 h to 4 days on the DELTA Pro and 38 h to 4 days on the Pro 3. A window air conditioner runs 4.2 h to 6.8 h against 4.8 h to 7.7 h, and a space heater 1.9 h to 2.4 h against 2.2 h to 2.7 h.

Weight

The DELTA Pro weighs 99 lb and the Pro 3 weighs 113.54 lb. Energy per pound is nearly flat, 36.4 Wh on the DELTA Pro and 36.1 Wh on the Pro 3, so the extra weight tracks the extra capacity rather than a heavier build. Both list a 5-year warranty and use from 14 F to 113 F, so the extra pounds are the main thing you take on for the larger battery.

Split-phase, switchover and expansion

Split-phase output is listed as available with a kit on the DELTA Pro and as built in on the Pro 3. UPS switchover is 30 ms against 10 ms, and cycles to 80% go from 3,500 to 4,000. Each takes two extra batteries, 3,600 Wh each on the DELTA Pro for 10,800 Wh and 4,096 Wh each on the Pro 3 for 12,288 Wh.

Which way to lean

Choose the DELTA Pro 3 if you want to refill quickly from the wall at 4,800 W, run a 4,000 W load or feed in up to 2,600 W of solar. Choose the DELTA Pro if your panels deliver under 30 V, if 99 lb is easier to move than 113.54 lb, or if you already own its 3,600 Wh batteries. The Pro 3 wall figure is the biggest single step in this pair.