When the power goes out and you are on a private well, you lose water along with the lights. No toilet flush, no shower, no tap. The best power station for a well pump is not the biggest battery you can find. It is the one that matches your pump's voltage and can survive the startup jolt, which is the part most buying guides skip.
Most home well pumps are 240V submersible units, and most portable power stations only put out 120V. That mismatch is the whole story. Below you get the watt math by pump size, the few stations that put out real 240V, a runtime table, and a plain list of what needs a licensed electrician.
If your well pump is 240V, you need a 240V-capable station. Our pick is the EcoFlow Delta Pro 3 (4,096 Wh, 4,000W at 120V and 240V) for pumps up to about 1 HP. The Anker SOLIX F3800 Plus (3,840 Wh, 6,000W) gives you more starting headroom for bigger pumps. On a 120V jet or shallow-well pump of 1/2 HP or less, a 120V station such as the Bluetti Elite 400 is enough and costs less. Any connection to a hard-wired pump needs a licensed electrician.
EcoFlow Delta Pro 3
The Delta Pro 3 delivers 4,000W continuous at both 120V and 240V from one unit, according to EcoFlow's product page, with up to 6,000W of boosted surge for motor starts. That covers the common 1/2 HP to 1 HP submersible pump with a real 240V output instead of a workaround. It is LFP (LiFePO4), rated to keep 80% capacity after 4,000 cycles, carries a 5-year warranty once you register it, and expands beyond its 4,096 Wh base. EcoFlow lists it at $2,799 on its own site.
Check today's price →Quick comparison
| Product | Best for | Key detail | Price |
|---|---|---|---|
| EcoFlow Delta Pro 3 | 240V pumps up to about 1 HP | 4,096 Wh · 4,000W at 120V/240V · 5-year warranty · LFP | about $2,800 |
| Anker SOLIX F3800 Plus | Bigger 240V pumps, most headroom | 3,840 Wh · 6,000W max at 120V/240V · 136.7 lbs · 3,000+ cycles | about $2,100-$2,700 |
| Bluetti Apex 300 | Smaller 240V pumps, lower price | 2,764.8 Wh · 3,840W · 7,680W surge · split-phase capable · 6,000+ cycles | about $1,400-$1,700 |
| Bluetti Elite 400 | 120V pumps of 1/2 HP or less | 3,840 Wh · 2,600W · 5,200W surge · 120V only | about $1,250-$1,400 |
Our picks, one by one
EcoFlow Delta Pro 3Best overall for a 240V well pump
EcoFlow states 4,000W continuous at 120V and 240V and a 5-year warranty after app registration. The cells are LFP with 80% capacity after 4,000 cycles. Pairing it with a pump takes a transfer switch or generator-style inlet installed by a licensed electrician. Choose it over the F3800 Plus if your pump is 1 HP or smaller and you want a slightly lower starting price. Choose the F3800 if you want more headroom.
Check price & availability →Anker SOLIX F3800 PlusMost headroom for larger pumps
Anker lists 120V/240V output at 25A max and 6,000W max from the L14-30R port, a 3,840 Wh base battery expandable to 53.8 kWh, and 3,000+ LFP cycles with a 5-year warranty. It also lists a 20 ms UPS switchover in wall-outlet mode. That 6,000W is the headroom that lets it clear the 5 kW row in the table below. Pick this over the Delta Pro 3 for a bigger or long-wire-run pump. Skip it if a 1/2 HP pump is all you have, because you are paying for power you will not use.
Check price & availability →Bluetti Apex 300Budget 240V option for small pumps
Retailer and spec-sheet listings show 2,764.8 Wh, 3,840W continuous, 7,680W surge, about 38 kg (84 lbs), 6,000+ cycles and a 20 ms UPS switchover. It costs roughly half of the Delta Pro 3 and still handles a 3/4 HP pump on the numbers. Take it over the Delta Pro 3 if your pump is 3/4 HP or smaller and money is tight. Skip it if your nameplate says 1 HP.
Check price & availability →Bluetti Elite 400Best for a 120V shallow-well or jet pump
Bluetti's own guide lists the Elite series for pumps of 0.3 to 0.75 HP. The Elite 400 stores 3,840 Wh, more than the Apex 300, but its inverter is smaller. That makes it a good fit for a 120V jet pump and the rest of the house on a lower budget. Pick it over the 240V models only if your pump label says 115V or 120V.
Check price & availability →Step one: read your pump's nameplate
Before you compare any battery, find three numbers on the pump or the breaker panel: voltage (120V or 230/240V), horsepower, and whether the pump is a submersible (down the well) or a jet pump (above ground). A 240V submersible usually has a 2-pole breaker in your panel, often 20 to 30 amps.
- 120V jet or shallow-well pump: any good 120V station can run it if the inverter covers the startup surge.
- 240V submersible pump: you need a station that outputs 240V, which today means the Delta Pro 3, the F3800 Plus or a split-phase Bluetti.
- Not sure: look for a 2-pole breaker or the model on the pressure tank wiring. If it is still unclear, ask the person who services your well.
Skipping this step is the expensive mistake. An 1,800W 120V station cannot run a 240V pump however much it stores, and a returned 100-pound battery is nobody's idea of fun. Write the three numbers on a sticky note and keep them with your outage kit, so you have them when you shop and when the lights go out.
Also check how the pump is switched. Most are controlled by a pressure switch at the tank, which cycles the pump on and off as you use water. That is good news for runtime, because the pump only draws power while pressure is dropping.
Pump size vs station output: the table
A well pump motor draws several times its running watts for about a second when it starts. The University of Florida Extension publishes a minimum generator size per well-motor horsepower, citing Franklin Electric's submersible motor guide. We matched it to each station's continuous output:
| Pump size (230V) | Typical running watts | Minimum generator size (extension table) | Delta Pro 3 (4,000W) | F3800 Plus (6,000W) | Apex 300 (3,840W) |
|---|---|---|---|---|---|
| 1/2 HP | about 700 W | 2.0 kW | 2.0x headroom | 3.0x | 1.9x |
| 3/4 HP | about 1,100 W | 3.0 kW | 1.3x | 2.0x | 1.3x |
| 1 HP | about 1,400 W | 4.0 kW | 1.0x (no margin) | 1.5x | 0.96x (short) |
| 1 1/2 HP | about 2,300 W (1.5 to 2 HP class) | 5.0 kW | 0.8x (short) | 1.2x | 0.8x (short) |
| 2 HP | about 2,300 W | 7.5 kW | 0.5x (no) | 0.8x (no) | 0.5x (no) |
Formula: headroom = station continuous watts ÷ minimum generator watts (1 kW = 1,000 W). Running watts are typical figures from a well-pump installer, and line up with the rule of thumb that a 230V single-phase motor draws roughly 5 amps per horsepower (about 1,150W). 1.0x or above means it meets the extension guideline.
The extension table is conservative because it protects the motor on a generator whose voltage sags at startup. A battery inverter handles the surge differently, and soft-start kits for well pumps lower the startup draw. The practical rule: treat anything at 1.3x or higher as comfortable and 1.0x as the edge. Do not count on surge ratings alone to start a bigger pump.
How long will it run your well?
A well pump runs far less than you think. We assumed a household using 300 gallons a day with a pump delivering 8 gallons per minute, which is about 37.5 minutes of pump time a day. Your number depends on your water use, your pump and your well depth, so swap in your own.
| Pump | Pump energy per day | Drawn from battery (90% inverter) | Apex 300 (2,765 Wh) | F3800 Plus (3,840 Wh) | Delta Pro 3 (4,096 Wh) |
|---|---|---|---|---|---|
| 1/2 HP, 700 W | 0.44 kWh | 0.49 kWh | 5.7 days | 7.9 days | 8.4 days |
| 3/4 HP, 1,100 W | 0.69 kWh | 0.76 kWh | 3.6 days | 5.0 days | 5.4 days |
| 1 HP, 1,400 W | 0.88 kWh | 0.97 kWh | 2.8 days | 3.9 days | 4.2 days |
Formula: days = battery Wh ÷ (running watts × 0.625 hours ÷ 0.90 inverter efficiency). Based on nominal capacity, so real days are a bit lower. The pump alone: add your fridge (about 1 to 2 kWh a day) and the days shrink.
Even with a fridge on the same battery, a 3,840 Wh station gives you roughly 1.5 to 2 days of both. Conserve water, since the pump runs only when you open a tap, and recharge from solar or the grid when it returns.
How we chose
This is a researched buying guide built from specs and manufacturer documents. We filtered for stations sold on Amazon with LFP chemistry, then required a published continuous output, and 240V output for submersible pumps. We read EcoFlow's and Anker's product pages for output, weight, cycles and warranty. We relied on the University of Florida Extension's well-motor table (from Franklin Electric) for pump sizing, and Bluetti's own well-pump guide for what it recommends on 120V. We then dropped anything where the manufacturer does not state 240V output or where the price for the output was out of line. Prices come from manufacturer pages and recent retailer listings, so check the current figure.
What an electrician has to do
A hard-wired well pump has no plug. To run it from a power station you need a way to isolate it from the grid and feed it from the station, which means a manual transfer switch or interlock and a generator-style inlet on the house wiring. A licensed electrician installs this, usually in an hour or two, and checks local code. Do not make a homemade cable with two male plugs, which can send power back to the utility lines and endanger line workers. Do not change the pressure switch or well wiring yourself either.
Ask the electrician to label the inlet, place it where you can reach it in the dark, and test the changeover once before storm season. Practice the full sequence while the grid is up: switch off the main breaker, connect the station, start it, then bring the pump circuit on. A dry run beats learning the steps during a storm. Keep the station itself indoors in a dry, ventilated spot, never in a flooded basement.
If you want zero electrical work, the alternative is a separate 120V convenience plan: store water, use a hand pump or a gravity filter for drinking water, and keep a power station only for the fridge and router.
Who should NOT buy one for a well pump (call a pro instead)
- You have a 1.5 HP or larger pump, or a deep well with a long wire run. You are in whole-home battery or standby generator territory, and an installer should size it.
- You are not sure of the voltage. Ask your well contractor before spending $1,500 or more.
- You want zero electrical work. A hard-wired pump cannot be plugged into a station without a licensed electrician.
- Outages are rare and short. Storing 15 to 30 gallons of water costs far less than $2,000.
- You rely on your well for livestock. Plan for several days and talk to your well company.
For a sump pump rather than a well pump, see our sump pump power station guide.
Pair it with solar and size for the rest of the house
Because a well pump uses under 1 kWh a day in the model above, one or two portable panels can recharge it between outages. Our portable solar panel guide covers matching panels to your station. If you want to size the rest of the load, use our power station sizing guide and the home battery backup hub.
Frequently asked questions
Can a portable power station run a well pump?
Yes, if the voltage matches and the inverter covers the startup surge. A 120V jet pump of 1/2 HP or less is easy. A 240V submersible needs a station with real 240V output, such as the EcoFlow Delta Pro 3 or Anker SOLIX F3800 Plus.
Can I plug my well pump into a power station?
Most home well pumps are hard-wired, so there is no plug. Connecting one needs a transfer switch or interlock installed by a licensed electrician. Never back-feed the house through a dryer outlet or a double-male cord.
How many watts do I need to start a 1/2 HP well pump?
A 1/2 HP motor runs at about 700W once it is going, but University of Florida Extension lists a 2 kW minimum generator size for it because of the startup surge. Most 3,000W-class stations clear that, if they output the right voltage.
What is a soft starter for a well pump?
A soft starter limits the current spike when the motor starts, so a smaller inverter can start it. Several sellers offer kits for well pumps. Have the installer confirm compatibility with your pump, since it is wired into the circuit.
How long will a power station run a well pump?
At about 37 minutes of pump time a day, a 3/4 HP pump uses roughly 0.7 kWh. A 3,840 Wh station could cover the pump alone for about 5 days, or less once you add a refrigerator.
Prices are approximate and change often. Contains affiliate links; we may earn a small commission at no extra cost to you.