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EcoFlow DELTA 3 Ultra Plus

3072 Wh · 3600 W output · LiFePO4 · $1999

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✅ Specs verified against the manufacturer's official listing — source · Last checked

Our verdict

The Ultra's solar problem solved: same everything, but 1600W of PV input instead of 800W. That doubles your off-grid refill speed for $200.

Best for: Off-grid cabins and van builds that actually recharge from panels.

What we like
  • 1600W solar input — twice the base Ultra
  • 7200W surge and 3072Wh
  • Expandable to 11kWh
Where it falls short
  • $1999 approaches DELTA Pro 3 pricing
  • 85.5 lb

Full specifications

Capacity3072 Wh
Continuous output3600 W
Surge output7200 W
Battery chemistryLiFePO4
Rated cycles4,000
Weight85.5 lb
Max solar input1600 W
Recharge (AC)1h 30m
ExpandableYes
Warranty5 years

What can the EcoFlow DELTA 3 Ultra Plus run?

ApplianceCan start it?Est. runtime
Refrigerator ✅ Yes 43.5 hrs
Mini fridge ✅ Yes 82.9 hrs
Chest freezer ✅ Yes 32.6 hrs
CPAP machine ✅ Yes 65.3 hrs
Sump pump ✅ Yes 3.3 hrs
Well pump (1/2 HP) ✅ Yes 2.6 hrs
Space heater ✅ Yes 1.7 hrs
Window AC (8k BTU) ✅ Yes 5.3 hrs
Microwave ✅ Yes 2.6 hrs
Coffee maker ✅ Yes 2.9 hrs
TV (55" LED) ✅ Yes 26.1 hrs
Laptop ✅ Yes 40.2 hrs
Phone charger ✅ Yes 130.6 hrs
CPAP + humidifier ✅ Yes 29.0 hrs
Fridge plus essentials ✅ Yes 26.1 hrs
12V RV fridge ✅ Yes 145.1 hrs
Starlink ✅ Yes 43.5 hrs
Electric blanket ✅ Yes 87.0 hrs

Runtime = (capacity × 0.85 inverter efficiency) ÷ appliance watts. Refrigerator assumes a 40% compressor duty cycle. Real-world results vary.

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Where the EcoFlow DELTA 3 Ultra Plus places

Every scenario it can actually handle, with its real position. We publish the placing whether or not it flatters the unit.