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Can a power station run a sump pump (1/3 HP)?

Updated
Short answer

Yes, if the station has at least 2,100 W of surge. A 1/3 HP sump pump runs at about 800 W, so a 1,000 Wh unit lasts about 11 hours if the pump runs 10% of the time, and only about 1 hour if it runs nonstop.

Calculate your runtime
Running
800 W
700–1115 W range
Start-up
2,100 W
Runs
10%
of the time, about 80 W average

A 1/3 HP sump pump draws about 800 W while it runs, and some models, like the Zoeller M53 at 9.7 amps, pull closer to 1,100 W. The bigger problem is starting it. The motor needs about 2,100 W for a moment each time the float switch kicks it on. None of the 300 to 500 Wh units in our table can start it. Every 1,000 Wh class unit can.

How long the battery lasts depends on the rain. We assume the pump runs about 10% of the time, or 6 minutes in every hour. That averages 80 W, or about 1,920 Wh over 24 hours. After inverter losses, a full day takes roughly 2,300 Wh of battery. A 1,000 Wh unit lasts about 11 hours at that pace, a 2,000 Wh unit about 22 hours, and a 3,000 Wh unit about 33 hours. In a heavy storm the pump may run nonstop, and then a 1,000 Wh unit lasts only about 1 hour.

A power station also needs someone to plug the pump in, unless it is already connected in UPS or pass-through mode. If your basement floods often, a power station is usually the wrong main tool. A battery backup sump pump made for the job, or a generator connected through a proper inlet, is the steadier answer. A power station works best as a short-term bridge when you are home to keep an eye on it.

How long does each power station run a sump pump (1/3 HP)?

At about 80 W on average, a sump pump (1/3 HP) runs for about 11 hrs on a 1,000 Wh-class unit (998–1,070 Wh) and about 44 hrs on the 4,096 Wh EcoFlow DELTA Pro 3. 4 units here can’t run it.

Swipe sideways for battery size, output and price →

Hours a sump pump (1/3 HP) runs on each power station, from a full charge with nothing else plugged in (15% inverter loss). Sorted by battery size.
Power stationRuntimeBatteryOutput / surgePrice range
EcoFlow RIVER 3 PlusCan’t run it286 Wh600 / 1,200 W$180–$300
BLUETTI Elite 30 V2Can’t run it288 Wh600 / 1,500 W$180–$280
Jackery Explorer 300 v2Can’t run it288 Wh300 / 600 W$200–$280
Goal Zero Yeti 500Can’t run it499 Wh500 / 1,000 W$340–$500
Goal Zero Yeti 1000 (6th Gen)11 hrs998 Wh2,000 / 3,600 Wlist price about $1,200
Anker SOLIX C1000 Gen 211 hrs1,024 Wh2,000 / 3,000 W$400–$600
BLUETTI Elite 100 V211 hrs1,024 Wh1,800 / 3,600 W$380–$500
DJI Power 1000 V211 hrs1,024 Wh2,600 / 2,600 W$340–$450
EcoFlow DELTA 311 hrs1,024 Wh1,800 / 3,600 W$500–$700
EcoFlow DELTA 3 Plus11 hrs1,024 Wh1,800 / 3,600 W$550–$800
Jackery Explorer 1000 v211 hrs1,070 Wh1,500 / 3,000 W$430–$560
BLUETTI AC18012 hrs1,152 Wh1,800 / 2,700 W$400–$500
Jackery Explorer 2000 v222 hrs2,042 Wh2,200 / 4,400 W$700–$1,000
Anker SOLIX C2000 Gen 222 hrs2,048 Wh2,400 / 4,000 W$700–$900
DJI Power 200022 hrs2,048 Wh3,000 / 3,600 W$700–$1,300
BLUETTI Elite 200 V222 hrs2,074 Wh2,600 / 3,900 W$700–$900
BLUETTI Apex 30029 hrs2,765 Wh3,840 / 7,680 W$1,200–$1,600
Jackery HomePower 300033 hrs3,072 Wh3,600 / 7,200 W$900–$1,500
Anker SOLIX F3800 Plus41 hrs3,840 Wh6,000 / 9,000 W$2,090–$2,700
EcoFlow DELTA Pro 344 hrs4,096 Wh4,000 / 8,000 W$2,400–$3,700

Estimate: battery Wh × 0.85 ÷ 80 W average (800 W × 0.1 duty). Your model may draw more or less; check its label. Prices are typical ranges we checked by hand on October 9, 2026, not live prices.

Where these numbers come from

A Zoeller M53 sump pump draws up to 9.7 amps at 115 V, and generator charts list a 1/3 HP sump pump at 800 W running and about 2,100 W to start. It runs only in short bursts when the pit fills, so energy use is modest, but the start-up needs a station with at least 2,100 W of surge.

Sources

  1. Zoeller catalog 53-0001 · gtsanders.com · PDF
  2. Home Depot product document · images.homedepot-static.com · PDF
  3. DTE Energy appliance usage guide (GenerLink worksheet) · dteenergy.com · PDF

We do not test units ourselves. Picks come from the official spec sheets and manuals, the watt-hour math on this site, and prices we check by hand. How we pick

Good fits for a sump pump (1/3 HP)

#1
BLUETTI Elite 100 V2 portable power station, front view

BLUETTI Elite 100 V2

$380–$500 · price checked

Capacity
1,024 Wh
Output
1,800 W (3,600 W surge)
Battery
LiFePO4, 4,000 cycles
Weight
25 lb
Wall charge
1 h 10 min
Solar input
1,000 W

Why it won: Runs a sump pump (1/3 HP) for about 11 hrs on one charge.

  • 1,800 W output runs most kitchen appliances one at a time
  • Full recharge from a wall outlet in about 70 minutes
  • 25 lb, much lighter than the older AC180
  • 4,000-cycle battery rated for about 10 years of use
  • Cannot add extra batteries
  • 1,024 Wh will run a fridge for roughly a day, not several days
  • Reaching the full 1,000 W solar input takes several panels
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Full specs and runtimes for the BLUETTI Elite 100 V2
#2
Anker SOLIX C2000 Gen 2 portable power station, front view

Anker SOLIX C2000 Gen 2

$700–$900 · price checked

Capacity
2,048 Wh
Output
2,400 W (4,000 W surge)
Battery
LiFePO4, 4,000 cycles
Weight
41.7 lb
Wall charge
1 h 28 min
Solar input
800 W

Why it won: Runs a sump pump (1/3 HP) for about 22 hrs on one charge.

  • 2,400 W output with 4,000 W peak handles most kitchen appliances
  • Built-in TT-30 outlet plugs straight into an RV
  • Expands to 4,096 Wh with one BP2000 Gen 2 battery
  • 10 ms UPS switch-over protects a router or computer
  • 41.7 lb, a two-hand carry
  • Only one USB-A port
  • List price is much higher than typical sale prices, so wait for a sale
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Full specs and runtimes for the Anker SOLIX C2000 Gen 2
#3
Jackery HomePower 3000 portable power station, front view

Jackery HomePower 3000

$900–$1,500 · price checked

Capacity
3,072 Wh
Output
3,600 W (7,200 W surge)
Battery
LiFePO4, 4,000 cycles (to 70%)
Weight
59.5 lb
Wall charge
2 h 12 min
Solar input
1,000 W

Why it won: Runs a sump pump (1/3 HP) for about 33 hrs on one charge.

  • 3,600 W output with a 30A outlet can run several appliances at once
  • Can feed up to six home circuits through a manual transfer switch
  • Takes up to 1,000 W of solar for faster off-grid recharging
  • Compact and light for its 3,072 Wh capacity at 59.5 lb
  • Cannot add extra batteries; the 2000 Plus or 5000 Plus can
  • Still heavy to carry up stairs, with no built-in wheels
  • Jackery rates cycle life to 70% capacity, not 80%
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Full specs and runtimes for the Jackery HomePower 3000

Make it last longer

  • • Set the station up in UPS or pass-through mode with the pump plugged in, so it takes over when the grid drops. Test it once: unplug the station from the wall and pour a bucket of water into the pit to trigger the pump.
  • • Keep the station off the basement floor and well away from the pit. Water and batteries do not mix.
  • • Use a heavy-duty extension cord rated above the pump's amps, about 10 A for a 1/3 HP pump, and keep it as short as you can.
  • • Unplug everything else from the station while the pump is on it. The pump needs all the surge headroom it can get.
  • • Recharge between storms. Even a few hours on a wall outlet or solar panels when you can get them makes a big difference.

Add the rest of your devices

Yes, it can run this, about 11 hrs for a sump pump (1/3 HP) on the BLUETTI Elite 100 V2.

Step 1

What do you want to run?

  • Sump pump (1/3 HP)
    Number of Sump pump (1/3 HP): 1
Add more
Step 2

Pick a power station

1,800 W output · 3,600 W surge · full specs

For a sump pump (1/3 HP) on the BLUETTI Elite 100 V2:

Yes, it can run this
Estimated runtime
11 hrs
If everything ran flat out the whole time: about 1 hr.
Running load
800 W
Average draw
80 W
Biggest surge
2,100 W
  • • The biggest start-up surge (2,100 W) is above the continuous output but within the 3,600 W surge rating, so it should start fine.

Math: battery Wh × 0.85 ÷ average watts. Cold weather, battery age and screen-on time all shorten this.

Power stations that can run this

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Price ranges checked by hand on October 9, 2026. Prices change often.

About 11 hrs
1 device on BLUETTI Elite 100 V2
See result

Common questions

What size power station do I need for a sump pump?
For a 1/3 HP pump, look for at least 2,100 W of surge and 800 W of continuous output. For battery, a full day at 10% pump time needs about 2,300 Wh, so a 2,000 to 3,000 Wh unit is a sensible size.
How long will a 1,000 Wh power station run a sump pump?
About 11 hours if the pump runs 6 minutes in every hour. If it runs nonstop during a heavy storm, about 1 hour. Your pit size and the rain decide which end you are on.
Can a small power station start a sump pump?
Only if its surge rating is high enough. A 1/3 HP pump needs about 2,100 W for a moment at start-up. Units like the Jackery Explorer 300 v2 (600 W surge) and Goal Zero Yeti 500 (1,000 W surge) cannot start it.
Is a power station better than a battery backup sump pump?
For flood protection, a dedicated battery backup pump is usually the better tool. It switches on by itself and is built for the job. A power station is more flexible, since it can also run your fridge or CPAP, but it needs enough surge and more planning.

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