Best Power Station for a Sump Pump Backup

By the Backup Power Central team · Updated October 2026 · 4 min read

Keep your basement dry when the power's out. Here's how to size a portable power station to actually run your sump pump through a storm.

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A dead sump pump during a power outage is how basements flood — usually during the exact kind of storm that knocked the power out in the first place. The good news: most sump pumps don't need a whole-house generator, just a power station sized correctly for the pump's startup surge and your expected outage length. Here's what actually works.

Our top picks

Best all-around for sump pump backup

Bluetti AC180

Our rating: ★★★★½ 4.5

1,152 Wh · 1800W output · 35 lb · around $699 · LiFePO4

Pros

Great price per watt-hour
1800W / 2700W surge
Fast charging

Cons

Heavier than rivals

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Price and availability last checked October 2026. We may earn a commission — it never changes our pick.

The AC180 has a strong 1800W output for its size and price, which comfortably covers the startup surge of most 1/3 HP to 3/4 HP sump pumps (those surges can hit 1300-1800W for a second or two). Its 1152Wh capacity gives you real runtime, not just a token backup, and at ~$699 it's the best value-per-watt here. It's also heavy-ish at 35lb, but this isn't a station you're carrying around — it sits near the sump pit and does its job.

Best for fast recharging between storm waves

EcoFlow Delta 2

Our rating: ★★★★½ 4.7

1,024 Wh · 1800W output · 27 lb · around $899 · LiFePO4

Pros

Very fast AC charging
1800W runs most appliances
Expandable capacity

Cons

Fan can be audible under load

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Price and availability last checked October 2026. We may earn a commission — it never changes our pick.

The Delta 2 matches the AC180's 1800W output with a bit less capacity (1024Wh), but its standout feature is recharge speed — it can go from empty to mostly full in under an hour on AC power. That matters a lot during multi-day storm systems with intermittent power: you can top it off in the gaps and keep the pump running continuously instead of nursing a slowly-draining battery.

Best for longer outages or bigger pumps

Bluetti AC200L

Our rating: ★★★★½ 4.6

2,048 Wh · 2400W output · 61 lb · around $1299 · LiFePO4

Pros

Big 2048Wh (expandable to 8kWh)
2400W / 3600W surge
Runs most home circuits

Cons

Heavy

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Price and availability last checked October 2026. We may earn a commission — it never changes our pick.

If you've got a 3/4 HP or 1 HP pump, a high water table, or you've been burned by multi-day outages before, the AC200L's 2048Wh capacity and 2400W output give you real headroom. It's the most expensive and heaviest option on this list (61lb, ~$1299), but it can also run a few other essentials — a fridge, some lights, a phone charger — while the pump cycles on and off in the background.

Comparison

Model	Capacity	Output	Weight	Price	Rating
EcoFlow Delta 2	1,024 Wh	1800W	27 lb	~$899	4.7 ★	Price →
Anker SOLIX C1000	1,056 Wh	1800W	28 lb	~$799	4.6 ★	Price →
Jackery Explorer 1000 v2	1,070 Wh	1500W	24 lb	~$799	4.6 ★	Price →
Bluetti AC180	1,152 Wh	1800W	35 lb	~$699	4.5 ★	Price →
Bluetti AC200L	2,048 Wh	2400W	61 lb	~$1299	4.6 ★	Price →
EcoFlow Delta Pro	3,600 Wh	3600W	99 lb	~$2899	4.5 ★	Price →

How to choose

Check the surge watts, not just running watts. A sump pump's nameplate might say 800W running, but the motor can pull 1500-2000W for a split second on startup. Pick a station whose rated output comfortably covers that surge — undersized units will just shut off or trip their overload protection right when you need them.
Think in cycles, not continuous runtime. A sump pump doesn't run nonstop — it kicks on for 20-60 seconds every few minutes depending on water inflow. A 1000-1150Wh battery can often power a pump through many hours of intermittent cycling, way more than its "continuous runtime" spec might suggest.
Size for your worst outage, not your average one. If outages in your area are usually an hour or two, a smaller unit is fine. If you've had multi-day outages with heavy rain (the exact scenario that floods basements), lean toward more capacity like the AC200L, or plan on recharging via a car or generator mid-outage.
Keep it dedicated. It's tempting to use the same power station for the fridge, phone charging, and the sump pump — but if it's your only line of defense against flooding, consider whether you need a second, smaller unit for everyday device charging so the sump pump always has a full battery when storms roll in.
Mind the humidity. Basements are damp. Keep the power station up on a shelf or table, not directly on a wet floor, and away from any splash zone near the sump pit itself.

FAQ

Can a portable power station really run a sump pump?

How long will it actually run during a storm?

Should I get one with solar charging?

Bottom line

For most homes, the Bluetti AC180 hits the sweet spot of surge capacity, battery size, and price for sump pump duty. If your outages run long or your pump is larger, step up to the Bluetti AC200L for extra runtime and headroom. Not sure what size you actually need? Run your specific pump's wattage and your typical outage length through our calculator to get a real number instead of a guess.