What Size Portable Power Station Runs a Basement Sump Pump?
Prevent $10,000+ basement floods during severe thunderstorms. Here is the surge wattage and battery capacity you need.
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.
Sizing only for running watts (800W) and buying a 1,000W inverter that trips an overload error the first time the float switch triggers in the middle of a storm.
Best Portable Power Stations for a Sump Pump (1/3 HP)
Each unit below is rated above the estimated 1800W startup surge, based on manufacturer specs.
EcoFlow DELTA 2 Max
Multi-day fridge + freezer, sump pumps, window AC & power tools
2,048Wh with a 2,400W inverter (4,800W surge) and up to 1,000W of solar input. At about 50 lbs it's the lightest 2kWh unit on our list, and it expands to 6,144Wh.
- 2,400W continuous / 4,800W surge for motor loads like sump pumps
- Up to 1,000W solar input
- Expandable to 6,144Wh with two extra batteries
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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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EcoFlow DELTA Pro (3,600Wh)
Multi-day outages, transfer-switch home backup & off-grid cabins
3,600Wh with a 3,600W inverter (7,200W surge) and up to 1,600W of solar input. Expandable to 10.8kWh, but at 99 lbs it's built to roll, not carry.
- 3,600Wh, the largest capacity on our list
- 3,600W continuous / 7,200W surge
- Up to 1,600W solar input; expandable to 10.8kWh with two extra batteries
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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.
Paid links. As an Amazon Associate I earn from qualifying purchases.
How Many Hours Will Each Power Station Run a Sump Pump (1/3 HP)?
Calculated using 85% real-world AC inverter efficiency and a 15% duty cycle (~120W average hourly consumption).
| Power Station | Battery Capacity | Inverter Output | Estimated Sump Pump (1/3 HP) Runtime | Amazon Link |
|---|---|---|---|---|
Jackery Explorer 300 Plus Lightest Pick (Under 10 lbs) | 288 Wh(245Wh usable) | 300W (600W surge) | Requires 800W continuous (Station max: 300W) | Check Price |
EcoFlow RIVER 2 Pro Mid-Size Pick | 768 Wh(653Wh usable) | 800W (1600W surge) | Requires 1800W startup surge (Station max: 1600W) | Check Price |
EcoFlow DELTA 2 Best All-Round 1kWh Pick | 1,024 Wh(870Wh usable) | 1800W (2700W surge) | 6.8 hrs | Check Price |
Jackery Explorer 1000 v2 Lightest 1kWh-Class Pick | 1,070 Wh(910Wh usable) | 1500W (3000W surge) | 7.1 hrs | Check Price |
Anker SOLIX C1000 Fastest Solar Charging (1kWh Class) | 1,056 Wh(898Wh usable) | 1800W (2400W surge) | 7 hrs | Check Price |
BLUETTI AC180 Most Capacity (1kWh Class) | 1,152 Wh(979Wh usable) | 1800W (2700W surge) | 7.6 hrs | Check Price |
EcoFlow DELTA 2 Max Best 2kWh Home Backup Pick | 2,048 Wh(1741Wh usable) | 2400W (4800W surge) | 13.6 hrs | Check Price |
Anker SOLIX F2000 (PowerHouse 767) Best Wheeled / RV Pick | 2,048 Wh(1741Wh usable) | 2400W (3600W surge) | 13.6 hrs | Check Price |
Jackery Explorer 2000 Plus Highest Output (2kWh Class) | 2,042 Wh(1736Wh usable) | 3000W (6000W surge) | 13.6 hrs | Check Price |
EcoFlow DELTA Pro (3,600Wh) Largest Capacity on Our List | 3,600 Wh(3060Wh usable) | 3600W (7200W surge) | 23.9 hrs | Check Price |
Sump Pump (1/3 HP) Power Station FAQ
How many watts does a sump pump (1/3 hp) use?
A typical basement sump pump (1/3 hp submersible) draws about 800W while running and up to about 1800W for a moment at startup. Averaged over time it uses roughly 120W. Check your appliance's label for its exact rating.
What size power station do I need for a sump pump (1/3 hp)?
Look for at least 800W continuous output, 1800W surge, and about 1694Wh of capacity for one day (12 hours) of use.
How long will a portable power station run a sump pump (1/3 hp)?
8 of the 10 power stations we compare can run it. Estimated runtimes range up to about 23.9 hours on the EcoFlow DELTA Pro (3,600Wh), assuming ~85% inverter efficiency.