Portable Power Stations: What They Are, What Size You Need and the Best Ones

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The storm rolls in after dinner. The lights flicker twice and go out, and the house falls quiet: no fridge hum, no Wi-Fi, no fan. Then someone switches on a lamp plugged into a box on the kitchen counter, the router blinks back to life, and the fridge keeps its food cold through the night. That box is a portable power station, and for a lot of families it has replaced the noisy gas generator in the garage.

In short: a portable power station is a big rechargeable battery with an inverter and real wall outlets built in. It makes no exhaust, so it’s safe to use indoors. Most homes are well served by a 1,000 to 2,000 Wh model with a lithium iron phosphate (LiFePO4) battery; size it by adding up the watt-hours your devices use, then dividing by 0.85.

This page is the start of our Portable Power Stations section. It explains what these machines are and how they differ from generators and UPS boxes, shows you how to work out what size you need (with real numbers from ENERGY STAR and device makers), and covers battery types, charging, safety and cost. At the end you’ll find our top picks and a table that sends you to the right detailed guide.

Portable power stations at a glance

• What it is: a battery, an inverter, a charger and a set of outlets (AC, USB-C, USB-A, 12V car socket) in one box with a handle or wheels.
• Two numbers matter: capacity in watt-hours (Wh), which is how much energy it holds, and output in watts (W), which is how much it can deliver at once.
• Common sizes: about 250 Wh (phones, router, CPAP for a night or two), about 1,000 Wh (fridge for most of a day, lights, laptop), about 2,000 Wh (a day of essentials), 3,000 Wh and up (home backup that can grow).
• How you charge it: from a wall outlet (often in about an hour), from solar panels, or from a car.
• Safe indoors: no fuel and no exhaust, unlike a gas generator.
• Price range: for example, from about $249 for a small EcoFlow RIVER 3 to about $2,799 for a 4,096 Wh EcoFlow DELTA Pro 3 (sale prices seen October 2026).
• No federal tax credit in 2026: the federal residential clean energy credit (25D) ended for systems completed after December 31, 2025.

What a portable power station is (and isn’t)

People call these machines many things: battery generators, solar generators, power banks for the house. They are all the same idea: stored electricity you can carry to where you need it. Here’s how they compare with the two things they’re most often confused with.

	Portable power station	Gas or propane generator	UPS (battery backup for a computer)
Where the power comes from	A battery you charge beforehand	An engine burning fuel	A small battery, usually lead-acid or lithium
Use indoors?	Yes	Never. Outside only, at least 20 feet from the house (CPSC)	Yes
How long it runs	Until the battery is empty; recharge from the wall, sun or car	As long as you keep adding fuel	Usually minutes, enough to save work and shut down
Noise	Quiet; fans spin up under heavy load	Loud engine	Silent, beeps on alarm
Switch-over when the grid fails	Many models have a UPS mode the maker rates at 10 to 20 milliseconds	Manual, or automatic with an installed transfer switch	Built for this: near-instant
Best for	Outages, CPAP, fridge, camping, RVs, quiet backup	Long outages with big loads like well pumps and central AC	Desktop computers and network gear

A “solar generator” is simply a power station sold with solar panels. A power station with a fast UPS mode can stand in for a small UPS on a router or modem, but the makers measure their switch-over times differently, so a sensitive desktop computer is still safest on a real UPS. Our power station vs generator guide covers both comparisons in detail.

How a power station works

Inside the case there are four main parts. Electricity flows through them like this:

1. Chargers. A built-in AC charger takes power from the wall; a solar charge controller (MPPT) takes power from panels; a DC input takes power from your car. Many models can combine two at once.
2. Battery pack. Dozens of lithium cells, today almost always lithium iron phosphate (LiFePO4), managed by a battery management system that watches temperature, voltage and current.
3. Inverter. The battery stores direct current (DC). The inverter turns it into 120-volt alternating current (AC), the same kind your wall outlets supply, so normal plugs work.
4. Outlets. AC outlets, USB-C and USB-A ports and a 12V car socket. Bigger units add RV (TT-30) or 240V (L14-30) outlets for a transfer switch.

One detail matters for sizing: converting DC to AC wastes some energy as heat, and the station’s own electronics use a little too. That’s why you never get the full rated watt-hours out of the AC outlets. We use about 85% as a fair planning number. Devices that run on DC (USB-C laptops, 12V fridges, CPAP machines with a DC cord) skip the inverter and get more of the battery. If you want the physics behind watts, volts and amps, see our electrical energy guide; for how batteries store energy, see chemical energy.

What size portable power station do you need?

You need to check two things, and most buying mistakes come from mixing them up.

1. Output (watts): can it start and run your biggest device? Add up the watts of everything you’ll run at the same time. The station’s continuous AC rating must be higher. Motors and compressors (fridges, sump pumps, air conditioners) need a short burst of extra power to start, so the surge rating matters too.
2. Capacity (watt-hours): how long will it last? For each device, multiply its watts by the hours you’ll use it. Add them up, then divide by 0.85 for inverter and conversion losses. That’s the minimum capacity to look for.

The quick formula for runtime: hours ≈ (capacity in Wh × 0.85) ÷ device watts. A 1,024 Wh station gives about 870 usable Wh, so it runs a 56-watt CPAP for about 15 hours, or a 30-watt fan for about 29 hours. These are estimates; real results depend on settings, temperature and the battery’s age.

How much power common devices use

These numbers come from ENERGY STAR’s lists of certified products and from device makers. Your own device may differ, so check its label or measure it with a plug-in watt meter. Fridges and freezers cycle on and off, so we use their daily energy (from ENERGY STAR’s annual figure ÷ 365), not the nameplate watts.

Device	Typical watts while running	Typical daily energy	Source
Wi-Fi router (mesh unit)	4.5 W (eero 6+) to 21.9 W (eero Max 7)	About 110–530 Wh over 24 h, plus your modem	eero
CPAP machine (ResMed AirSense 11)	56.1 W typical, 73.2 W peak	About 450 Wh for 8 hours at the typical figure	ResMed user guide
Ceiling fan, high speed	About 30 W (median of ENERGY STAR models)	About 240 Wh for 8 hours	ENERGY STAR
Laptop	65 W charger (median ENERGY STAR notebook); less in use	Up to about 520 Wh if it drew the full 65 W for 8 hours; usually much less	ENERGY STAR
55-inch TV	About 85 W (median of ENERGY STAR 45–59 inch models)	About 340 Wh for 4 hours	ENERGY STAR
Top-freezer refrigerator	Cycles on and off	About 1.0 kWh (363 kWh a year)	ENERGY STAR median
Bottom-freezer or French-door fridge	Cycles on and off	About 1.5 kWh (556 kWh a year)	ENERGY STAR median
Side-by-side refrigerator	Cycles on and off	About 1.75 kWh (640 kWh a year)	ENERGY STAR median
Compact (dorm) fridge	Cycles on and off	About 0.67 kWh (246 kWh a year)	ENERGY STAR median
Upright freezer	Cycles on and off	About 1.2 kWh (438 kWh a year)	ENERGY STAR median
5,000 BTU window air conditioner	About 350 W while cooling (5,000 BTU ÷ CEER 14.4)	About 2.8 kWh for 8 hours of steady cooling	ENERGY STAR
8,000 BTU window air conditioner	About 530 W while cooling (8,000 BTU ÷ CEER 15)	About 4.3 kWh for 8 hours of steady cooling	ENERGY STAR
1/3 HP sump pump (Zoeller M53)	About 1,120 W running (9.7 A × 115 V)	Depends on how often it cycles	Zoeller rating

ENERGY STAR’s fridge figures come from a standard lab test. A fridge in a hot kitchen, opened often, will use more, so add a margin. Also remember the starting surge: when a fridge or freezer compressor kicks on, it briefly pulls several times its running watts. The 1,000 Wh stations we list carry surge ratings of 3,000 W or more (for example 3,600 W on the DELTA 3 Plus and 3,000 W on the Jackery Explorer 1000 v2), which is plenty for a kitchen fridge; check the surge rating carefully before you plug in a pump or an air conditioner.

Runtime examples

Estimated with usable Wh ≈ capacity × 0.85 and the device numbers above. These are our calculations, not maker claims or test results.

Station size	Router + modem (about 15 W)	CPAP (56 W)	Top-freezer fridge (1.0 kWh/day)	Bottom-freezer fridge (1.5 kWh/day)	5,000 BTU window AC (350 W)
About 250 Wh (RIVER 3, 245 Wh)	About 14 hours	About 3.7 hours	About 5 hours	About 3 hours	Under 40 minutes
About 1,000 Wh (DELTA 3 Plus, 1,024 Wh)	About 58 hours	About 15 hours	About 21 hours	About 14 hours	About 2.5 hours
About 2,000 Wh (2,048 Wh models)	About 116 hours	About 31 hours	About 42 hours	About 27 hours	About 5 hours
About 3,000 Wh (3,072 Wh models)	About 174 hours	About 46 hours	About 63 hours	About 41 hours	About 7.5 hours
About 4,000 Wh (DELTA Pro 3, 4,096 Wh)	About 232 hours	About 62 hours	About 84 hours	About 55 hours	About 10 hours

A real outage day, added up: a top-freezer fridge (about 1,000 Wh), router and modem around the clock (about 360 Wh), a CPAP for eight hours (about 450 Wh), a ceiling fan overnight (about 240 Wh) and a few LED lamps in the evening (about 150 Wh) come to roughly 2,200 Wh. Divide by 0.85 and you need about 2,600 Wh of capacity for a full day without recharging. A 2,048 Wh station covers most of that day; a 3,000 Wh station covers all of it, or a 2,000 Wh station plus a few hours of solar. Our what size portable power station do I need guide walks through more examples, including sump pumps and window air conditioners.

Battery chemistry: LiFePO4 vs lithium-ion (NMC)

Almost every current power station from the big brands uses lithium iron phosphate (LiFePO4, also written LFP). Older models and some small CPAP batteries use nickel manganese cobalt (NMC), the “ternary lithium” in phones and laptops. The difference shows up most in how long the battery lasts:

• Cycle life: EcoFlow rates the DELTA 3 Plus for 4,000 cycles to 80% of its capacity, and Anker rates the SOLIX C1000 Gen 2 the same. By contrast, Goal Zero rates its older NMC Yeti 1500X for 500 cycles to 80%. Jackery quotes 4,000 cycles to 70% or more, a different yardstick, so don’t compare it directly with the 80% numbers.
• Weight: NMC packs more energy into less weight, which is why the BLUETTI X30 CPAP battery (NMC, 297 Wh) weighs only 4 pounds. LiFePO4 stations are heavier for their size.
• Cold: lithium batteries don’t like charging below freezing. EcoFlow, for example, lists a charging range of 32°F to 113°F and a discharge range of 14°F to 113°F for the DELTA 3 Max Plus. Anker’s fastest charging mode on the C1000 Gen 2 needs the battery above 68°F. Bring the station indoors to charge in winter.

For a station you’ll keep for years and cycle during outages and trips, LiFePO4 is the clear choice. Our LiFePO4 vs lithium-ion guide goes deeper.

Charging: wall, solar and car

• Wall outlet: the fastest way. EcoFlow says the DELTA 3 Plus charges 0–100% in 56 minutes, Anker says the C1000 Gen 2 does it in 49 minutes in its UltraFast mode, and Jackery says the Explorer 2000 v2 fills in 1.75 hours (1.3 hours in its app’s Emergency Charge mode). Charge before a storm arrives and keep it topped up.
• Solar: the reason people call them “solar generators”. Check the station’s maximum solar input: 110 W on the small RIVER 3, 400 W on the Jackery Explorer 1000 v2 and 2000 v2, 1,000 W on the EcoFlow DELTA 3 Plus, and 2,600 W on the DELTA Pro 3. Real-world solar output is lower than a panel’s rating and depends on sun, season and angle. As one maker example, Jackery lists 7.5 hours of solar charging for its Solar Generator 1000 v2 kit with a 200 W panel. See best solar generators and our solar energy guide.
• Car: a 12V car socket charges slowly, fine for topping up between campsites. Some larger models charge much faster from a dedicated alternator charger; Anker lists 800 W alternator charging for the C2000 Gen 2.

Safety: what to know before an outage

• Indoors is fine for a power station. It burns no fuel and makes no carbon monoxide. Keep it dry, on a hard surface, with room around the vents.
• Gas generators are a different story. The U.S. Consumer Product Safety Commission says an average of nearly 100 people die each year from carbon monoxide poisoning caused by portable generators. CPSC’s rules: never run one inside a home, garage, basement, crawlspace or shed; never on a porch or in a carport; only outside, at least 20 feet from the house. Put battery-powered CO alarms on every level of your home.
• Never “backfeed” your house. Plugging a power station or generator into a wall outlet with a double-ended cord can send power back into the utility lines and electrocute line workers, and it can start a fire. To power house circuits, have a licensed electrician install a transfer switch or inlet box, or the maker’s own home panel. EcoFlow says its Smart Home Panel 2 requires installation before use, and Jackery’s Smart Transfer Switch needs professional installation.
• Medical devices: if someone in your home relies on a CPAP, oxygen or other medical equipment, talk to your doctor or equipment supplier about backup power. Makers differ on this: Jackery says its stations are not recommended for medical devices or life-support equipment.

What they cost: price per watt-hour

Dividing price by capacity is the easiest way to compare value. Small stations cost more per Wh because the inverter, case and ports cost about the same whatever the battery size. The prices below are what we saw in October 2026: the RIVER 3 on Amazon, the rest on the maker’s own store (several were sale prices).

Model	Capacity	Price seen	About $ per Wh
EcoFlow RIVER 3	245 Wh	about $249 (Amazon)	$1.02
EcoFlow RIVER 3 Plus	286 Wh	about $299 (maker)	$1.05
EcoFlow DELTA 3 Plus	1,024 Wh	about $669 (maker sale; list $799)	$0.65
Goal Zero Yeti 1500 (6th Gen)	1,505 Wh	about $1,500 (maker)	$1.00
EcoFlow DELTA 3 Max Plus	2,048 Wh	about $1,149 (maker sale; list $1,599)	$0.56
EcoFlow DELTA Pro 3	4,096 Wh	about $2,799 (maker sale; list $3,699)	$0.68

Money note: there is no federal tax credit for portable power stations or home batteries in 2026. The residential clean energy credit (25D) ended for systems completed after December 31, 2025. A few states and utilities run their own battery programs, mostly for installed home batteries; search the DSIRE database (dsireusa.org) for your state.

Which power station guide is for you?

If you want to…	Typical size	Read
See our overall favorites at every size	250–4,000 Wh	Best portable power stations
Keep the essentials on in a power outage	2,000 Wh and up	Best for home backup
Keep the fridge cold	1,000–2,000 Wh	Best for a refrigerator
Run a CPAP through the night	250–1,000 Wh	Best for CPAP
Power a campsite	250–1,000 Wh	Best for camping
Power an RV or van	1,000–3,000 Wh	Best for RVs
Charge from the sun	Any, plus panels	Best solar generators
Work out your own size	–	What size do I need?
Understand battery types	–	LiFePO4 vs lithium-ion
Choose between brands	–	EcoFlow vs Jackery · EcoFlow vs Anker SOLIX · BLUETTI vs EcoFlow
Decide between battery and gas	–	Power station vs generator (and vs UPS)

Our top portable power station picks

We researched and compared current models using each maker’s own spec pages; we did not test them ourselves. All five use LiFePO4 batteries.

Prices change often. The prices below are what we saw at the maker or a major retailer in October 2026; check the current price before you buy.

1. EcoFlow RIVER 3 Plus: best small power station

At 10.4 pounds, the RIVER 3 Plus stores 286 Wh and delivers 600 W from three AC outlets (1,200 W surge). EcoFlow rates its UPS switch-over at under 10 milliseconds, which makes it a tidy backup for a router and modem: our estimate is about 16 hours on a 15 W setup. It charges from the wall in about an hour, takes up to 220 W of solar, and can grow to 858 Wh with EcoFlow’s clip-on extra battery. EcoFlow’s store price was about $299 in October 2026.

• Good: light, quick to charge, fast UPS, expandable, 3,000 cycles to 80% (maker).
• Watch out: too small for a fridge for more than a few hours.
• Best for: router backup, a night or so of CPAP without the humidifier, phones and lights, short camping trips.

Check the EcoFlow RIVER 3 Plus price on Amazon

2. EcoFlow DELTA 3 Plus: best for most homes

The DELTA 3 Plus hits the sweet spot: 1,024 Wh, 1,800 W continuous (3,600 W surge), six AC outlets and a full charge from the wall in 56 minutes, according to EcoFlow. That’s about 21 hours for an average top-freezer fridge by our estimate, or about 15 hours of CPAP at ResMed’s typical figure. It takes up to 1,000 W of solar and can be expanded to 5 kWh with EcoFlow extra batteries. EcoFlow rates it for 4,000 cycles to 80% and gives a 5-year warranty; the maker’s sale price was about $669 (list $799) in October 2026.

• Good: lots of outlets, very fast charging, big solar input, room to grow.
• Watch out: 27.6 lb; a full day of outage essentials needs about twice this capacity.
• Best for: fridge plus router and lights through an overnight outage, CPAP, camping with comforts.

Check the EcoFlow DELTA 3 Plus price on Amazon

3. Jackery Explorer 2000 v2: lightest 2 kWh pick

Jackery fits 2,042 Wh and 2,200 W of output (4,400 W surge) into 39.5 pounds, the lightest 2 kWh LiFePO4 unit in our catalog. It charges fully in 1.75 hours from the wall (1.3 hours in Emergency Charge mode) and Jackery lists a UPS switch-over under 20 ms. By our math it runs a typical bottom-freezer fridge for about 27 hours. Jackery quotes 4,000 cycles to 70%+ and a 3-year warranty plus 2 more years when bought on Jackery.com.

• Good: easy to carry for its size, simple to use, enough surge for most fridges and many sump pumps.
• Watch out: only three AC outlets, 400 W maximum solar input, and it can’t be expanded.
• Best for: a day of outage essentials without a lot of lifting; RV weekends.

Check the Jackery Explorer 2000 v2 price on Amazon

4. Anker SOLIX C2000 Gen 2: best expandable 2 kWh

The C2000 Gen 2 stores 2,048 Wh and puts out 2,400 W (4,000 W surge), with 20-amp household outlets and a TT-30 RV outlet. Add Anker’s BP2000 expansion battery and it doubles to about 4 kWh. Anker lists a full wall charge in 88 minutes (58 minutes with wall plus solar), 800 W of solar input, 800 W alternator charging for vans and RVs, a 10 ms UPS switch-over and 4,000 cycles to 80%.

• Good: grows with you, RV-ready outlet, fast alternator charging.
• Watch out: 41.7 lb; the maker’s spec table doesn’t state the outlet count, so check the listing.
• Best for: home backup you may want to enlarge later; RV and van owners.

Check the Anker SOLIX C2000 Gen 2 price on Amazon

5. EcoFlow DELTA Pro 3: best for home backup

This is a home battery on wheels: 4,096 Wh, 4,000 W of 120V/240V output (8,000 W surge) and seven outlets, including TT-30, L14-30 and 6-20R. By our estimate it can keep a bottom-freezer fridge cold for more than two days, or run a 5,000 BTU window AC for about 10 hours of steady cooling. It accepts up to 2,600 W of solar, expands to 12 kWh with two extra batteries, and can feed house circuits through EcoFlow’s Smart Home Panel 2, which an installer must fit. EcoFlow’s sale price was about $2,799 (list $3,699) in October 2026.

• Good: huge capacity and output, 240V, 4,000 cycles to 80%, 5-year warranty (maker).
• Watch out: 113.5 lb; whole-home hookups need an electrician and add cost.
• Best for: multi-day outages, well and sump pumps, homes that want a battery instead of a gas generator.

Check the EcoFlow DELTA Pro 3 price on Amazon

Portable power station FAQs

What is a portable power station used for?

It stores electricity so you can use it where there’s no outlet or when the grid is down. Homeowners use them to keep a fridge, router, lights, phones and a CPAP running in an outage. Campers, RV owners and van lifers use them for lights, fans, coolers and laptops. Because there’s no engine, they’re quiet and safe to use indoors, and they recharge from the wall, solar panels or a car.

How long will a portable power station last?

Per charge: divide its capacity times 0.85 by your devices’ watts. A 1,024 Wh station runs a 56 W CPAP for roughly 15 hours. Over its life: current LiFePO4 models are rated for 3,000 to 4,000 cycles before dropping to 80% of capacity (EcoFlow, Anker), or 4,000 cycles to 70% (Jackery). That’s many years of regular use.

Can a portable power station run a refrigerator?

Yes. ENERGY STAR’s median top-freezer fridge uses about 1 kWh a day, so a 1,000 Wh station keeps it running for about 21 hours by our estimate, and a 2,000 Wh station for about 42 hours. French-door models use about half as much again. Make sure the station’s surge rating covers the compressor start-up. See our refrigerator guide.

Is a portable power station better than a generator?

For short outages, essentials and indoor use, usually yes: no fuel, no fumes, no noise, and it switches on instantly. For long outages with big loads like central air or a well pump, a generator still supplies more energy for the money, but it must run outside, at least 20 feet from the house (CPSC). Many families use both: the generator recharges the station.

Can I plug a power station into my house wiring?

Not through a wall outlet. “Backfeeding” with a double-ended cord can energize utility lines and injure line workers. Have a licensed electrician install a transfer switch or inlet box, or the maker’s own home panel, such as EcoFlow’s Smart Home Panel 2 for the DELTA Pro 3. Smaller stations simply power devices plugged straight into them, which needs no electrician.

Is there a tax credit for portable power stations in 2026?

No. There’s no federal tax credit for portable power stations or home batteries in 2026; the federal residential clean energy credit (25D) ended for systems completed after December 31, 2025. Some states and utilities have their own programs, mostly for permanently installed batteries. Search DSIRE (dsireusa.org) or ask your utility before you buy.

Keep exploring

Ready to pick one? Start with the best portable power stations, or go straight to home backup, CPAP or camping. To work out your own numbers, use our sizing guide. For the bigger picture, see off-grid energy and solar energy, or browse every article in our portable power stations category.