The three checks

1/2 HP well pump on its own, with nothing else plugged in, against the published ratings of the EcoFlow DELTA 3.

1/2 HP well pump on the EcoFlow DELTA 3: power checks
CheckNeedsStation hasResult
Running watts against continuous output875 W1,800 WPasses
Starting watts against surge rating1,750 W3,600 WPasses
A full day at 2 h a day1,750 Wh870 Wh usableFails

How long it runs across models

The appliance class spans a range of models. Running time on a full charge at the low, typical and high figure in the data:

1/2 HP well pump on the EcoFlow DELTA 3, low to high
CaseRunning wattsRunning time
Low end of the class750 W1.2 h
Typical875 W60 min
High end of the class1,000 W52 min

Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Keeping up on solar

At 4 peak sun hours, counting 75% of the panel rating: 200 W of panels bring in about 600 Wh a day, 34% of the 1,750 Wh it uses at 2 h a day. 500 W of panels bring in about 1,500 Wh a day, 86% of the 1,750 Wh it uses at 2 h a day.

Other options

The smallest EcoFlow model in the data that is enough for a full day of a 1/2 HP well pump is the EcoFlow DELTA 3 Ultra (3,072 Wh). The nearest capacities from any brand:

The smallest EcoFlow model that is enough, then the stations closest in capacity to the EcoFlow DELTA 3, with a 1/2 HP well pump
Power stationCapacityVerdictRunning time
EcoFlow DELTA 3 Ultra3,072 WhEnough3.0 h
BLUETTI Elite 100 V21,024 WhRuns it, but not long enough60 min
Anker SOLIX C1000 Gen 21,024 WhRuns it, but not long enough60 min
DJI Power 10001,024 WhRuns it, but not long enough60 min

The EcoFlow DELTA 3

Everything the EcoFlow DELTA 3 runs, its recharge times and full specifications

EcoFlow's page for the DELTA 3 (opens in a new tab)

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