Can the EcoFlow DELTA 2 Run a Sump Pump (1/3 HP)?
Yes. With 1,024Wh of LiFePO4 battery capacity (870Wh usable after 85% AC inverter conversion) and a 1800W continuous / 2700W surge pure sine wave inverter, the EcoFlow DELTA 2 should run a Basement Sump Pump (1/3 HP Submersible) for approximately 6.8 hrs on a single charge.
- Usable Watt-Hours: The EcoFlow DELTA 2 holds 1024Wh, which yields about 870Wh of 120V AC power, assuming ~15% DC-to-AC inverter loss.
- Sump Pump (1/3 HP) Duty Cycle: While active, a Sump Pump (1/3 HP) pulls 800W (with a 1800W startup spike). Over a multi-hour period, its 15% duty cycle averages ~120W per hour (plus ~8W inverter standby overhead).
- Tip: Sump pumps are all about STARTING SURGE. A 1/3 HP pump draws 800W while pumping, but demands 1,600W–2,000W for a split second to spin up the impeller against water pressure. Never use a power station rated below 1,800W continuous / 2,400W+ surge.
Compare With an Alternative
EcoFlow DELTA 2
Full-size refrigerators, coffee makers, microwaves & 1-day home blackouts
A balanced 1kWh-class unit: a 1,800W inverter (2,700W surge) covers most single household appliances, it weighs 27 lbs, and it can expand to 3,040Wh later with an extra battery.
- 1,800W continuous / 2,700W surge handles fridges, coffee makers and microwaves (one at a time)
- 0–80% wall charge in about 50 minutes (EcoFlow spec)
- Expandable to 3,040Wh with an extra battery
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Jackery Explorer 2000 Plus
Well pumps, sump pumps, power tools & modular whole-home expansion
The highest-output 2kWh unit on our list: 3,000W continuous and 6,000W surge, on wheels, with expansion to about 12kWh using add-on battery packs.
- 3,000W continuous / 6,000W surge, the highest in the 2kWh class on our list
- Up to 1,400W solar input
- Rated 4,000 cycles to 70% capacity
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Inexpensive Add-Ons for Running a Sump Pump (1/3 HP) on Battery
Warns you early if water starts rising before the battery or pump gives out.
Measures what your appliance actually draws, so you size from real numbers instead of estimates.
Lets the power station sit where it's convenient without voltage drop on motor loads.
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