1000Wh Portable Power Stations: We Compared 4 on What a Kilowatt-Hour Buys
Off-grid power editor
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Updated
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This guide is for people who have settled on roughly one kilowatt-hour of storage and now face a shortlist of units that all hold within about 130Wh of each other. We compared four of them on the figures that actually separate them once capacity stops being a tiebreaker: watt-hours per pound, watt-hours banked per minute of charging, solar input ceiling and lifetime kilowatt-hours implied by the rated cycle count. We did not test these units, and every review names what its recommendation rests on. What you get here is the arithmetic no listing shows. We divide capacity by named loads to get honest hours, build a daily watt-hour budget so you can see what share of a day this class covers, and say plainly where a kilowatt-hour is simply the wrong size.
What is the best 1000Wh portable power station?
The BLUETTI AC180 suits the widest range of buyers in this class. It holds the most energy here at 1152Wh and refills to 80% in 45 minutes, which is about double the energy per minute of the slowest unit on this page. If you carry the unit rather than leave it plugged in, the Jackery Explorer 1000 v2 stores 1070Wh in 23.8 lb and is the better buy.
Key takeaways
- This whole class spans 1024Wh to 1152Wh, a 12% range worth under an hour of fridge time, so capacity is not the deciding specification
- Allow about 10% for conversion loss and a kilowatt-hour covers roughly six hours of fridge, three nights of CPAP or 40 minutes of space heater
- Refill rate varies far more than capacity, from about 10.5 to 20.5 watt-hours banked per minute of grid
- Watt-hours per pound runs from 32.6 to 45.0 across this shortlist, a 38% spread for near-identical stored energy
- Multiply capacity by rated cycles and lifetime delivery ranges from about 3,072kWh to 4,280kWh, though the end points quoted are not the same
Our picks at a glance
Every unit below wins a specific situation rather than a place in a ranking. Pick the row that matches how you will actually use it.
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Best for refilling in short grid windows
BLUETTI AC180
A household on an unreliable supply where the unit lives in one spot and has to refill during whatever grid windows appear between cuts.
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Best for carrying a full kilowatt-hour
Jackery Explorer 1000 v2
Anyone who moves the unit regularly between a vehicle, a campsite or a job and wants a full kilowatt-hour without a two-hand lift every time.
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Best for refilling from solar panels
Anker SOLIX C1000
Off-grid or outage use where panels rather than a wall socket do most of the recharging, and where a fridge or a pump has to start reliably.
-
Best for growing past a kilowatt-hour later
EcoFlow DELTA 2
Buyers who suspect a kilowatt-hour will not be enough within a year or two and want to add storage rather than replace the whole unit.
How they compare
Scroll the table sideways to see every column.
| Product | Where to buy | Award | Capacity | AC output | Weight | AC recharge time | Max solar input | UPS switchover | Rated cycle life | Expandable | Best for |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BLUETTI AC180 | Best for refilling in short grid windows | 1152Wh | 1800W (2700W Power Lifting) | 35.3 lb (16.0 kg) | 45 minutes to 80% | 500W | Under 20ms | 3,500 cycles to 80% | No | A household on an unreliable supply where the unit lives in one spot and has to refill during whatever grid windows appear between cuts. | |
| Jackery Explorer 1000 v2 | Best for carrying a full kilowatt-hour | 1070Wh | 1500W (3000W surge) | 23.8 lb (10.8 kg) | 1.7 hours to full | 400W | -- | 4,000 cycles to 70% | No | Anyone who moves the unit regularly between a vehicle, a campsite or a job and wants a full kilowatt-hour without a two-hand lift every time. | |
| Anker SOLIX C1000 | Best for refilling from solar panels | 1056Wh | 1800W (2400W SurgePad) | 28.4 lb (12.9 kg) | 58 minutes to 80% | 600W | Under 20ms | 3,000 cycles to 80% | Yes, to 2112Wh with one expansion battery | Off-grid or outage use where panels rather than a wall socket do most of the recharging, and where a fridge or a pump has to start reliably. | |
| EcoFlow DELTA 2 | Best for growing past a kilowatt-hour later | 1024Wh | 1800W (2700W X-Boost) | 27.0 lb (12.2 kg) | 80 minutes to full | 500W | Under 30ms | 3,000 cycles to 80% | Yes, to 3040Wh with extra batteries | Buyers who suspect a kilowatt-hour will not be enough within a year or two and want to add storage rather than replace the whole unit. |
The full reviews
Best for refilling in short grid windows
BLUETTI AC180
BLUETTI
The AC180 holds the most energy in this class at 1152Wh and puts it back faster than anything else here, reaching 80% in 45 minutes. That combination suits an unreliable supply rather than a trip, because the extra weight it carries only earns its keep when the unit sits in one place.
What we like about the BLUETTI AC180
- 1152Wh is the largest pack in this shortlist, 128Wh more than the 1024Wh EcoFlow DELTA 2 and 96Wh more than the 1056Wh Anker SOLIX C1000
- 45 minutes to 80% banks about 922Wh per grid window, nearly double what the slowest unit here recovers in the same time
- Rated 3,500 cycles to 80%, which works out to about 4,032kWh delivered over the pack's rated life
- Four AC outlets among 11 ports, so a fridge, a router and two lamps run without a power strip
- Under 20ms switchover is quick enough that a desktop or a modem does not reboot when the grid drops
Where it falls short for the BLUETTI AC180
- At 35.3 lb it is the heaviest unit here and returns only 32.6Wh per pound, against 45.0Wh per pound for the Jackery Explorer 1000 v2
- The expandable spec reads No, so the ceiling is fixed at 1152Wh and outgrowing it means buying a second unit rather than a battery
- The 500W solar input is below the 600W the Anker SOLIX C1000 accepts, which costs you roughly half an hour of sun on a full refill
- Power Lifting reaches 2700W by lowering output voltage, so that figure never applies to a compressor or a pump
Key specifications
- Capacity
- 1152Wh
- AC recharge time
- 45 minutes to 80%
- AC output
- 1800W (2700W Power Lifting)
- Weight
- 35.3 lb (16.0 kg)
- Rated cycle life
- 3,500 cycles to 80%
- UPS switchover
- Under 20ms
Inside a class where every unit holds roughly a kilowatt-hour, capacity is a weak tiebreaker. The AC180 wins here on the second kilowatt-hour, not the first.
The refill is the differentiator
Rated at 45 minutes to 80%, the AC180 returns about 922Wh in three quarters of an hour, an average of roughly 20.5Wh for every minute it is plugged in. The Anker SOLIX C1000 manages about 14.6Wh a minute, the EcoFlow DELTA 2 about 12.8, and the Jackery Explorer 1000 v2 about 10.5.
Turn that into the situation that actually happens. The grid comes back for half an hour, then drops again. In those 30 minutes the AC180 banks about 615Wh. The Jackery banks about 315Wh. Over a day of flickering supply, the AC180 effectively has a bigger battery than its rating suggests, because it keeps filling it.
What 1152Wh covers
Assume 10% is lost turning DC into AC, a planning figure rather than a measured one, and you have about 1037Wh to spend.
- A full-size fridge averaging 150W across its duty cycle: about 6.9 hours
- A CPAP drawing 40W with the humidifier off: about 26 hours, so roughly three nights
- A 1500W space heater: about 41 minutes
That 6.9 hours is the longest fridge figure in this guide, and it beats the DELTA 2 by only 46 minutes. The extra 128Wh is real, but it does not change what the unit is for.
Where the weight lands
35.3 lb for 1152Wh is 32.6Wh per pound, the worst ratio here. Against the Explorer 1000 v2 the comparison is blunt: 11.5 lb more weight buys 82Wh more energy, which is about 7Wh gained for each extra pound you lift. If the unit moves between a car and a campsite, that trade is bad. If it sits beside a fridge, it costs you nothing.
Who should look elsewhere
Anyone who expects the requirement to grow. The AC180 does not take an expansion battery, so a household that later wants two days of fridge coverage has to buy a whole second unit rather than add storage. If that is a realistic future, the DELTA 2 and its 3040Wh ceiling answers the question the AC180 cannot.
- Best for
- A household on an unreliable supply where the unit lives in one spot and has to refill during whatever grid windows appear between cuts.
- Choose something else if
- You carry the unit regularly, or you expect your storage requirement to grow, because 1152Wh is a hard ceiling with no expansion battery available.
Best for carrying a full kilowatt-hour
Jackery Explorer 1000 v2
Jackery
The Explorer 1000 v2 stores 1070Wh in 23.8 lb, which is 45.0Wh for every pound you pick up and the best ratio in this class by a wide margin. The saving comes out of the inverter and the charging hardware, so it is the pick for a unit that travels rather than one that sits on standby.
What we like about the Jackery Explorer 1000 v2
- 45.0Wh per pound is 38% better than the 32.6Wh per pound of the BLUETTI AC180
- 23.8 lb is light enough for one person to lift into a car boot without planning the lift
- 4,000 rated cycles is the highest count here, about 4,280kWh delivered across the pack's rated life
- 3000W surge headroom against a 1500W continuous rating leaves room for a compressor to start
Where it falls short for the Jackery Explorer 1000 v2
- The 1500W inverter is 300W below the AC180 and the DELTA 2, which rules out running a 1500W heater and anything else at the same time
- No UPS switchover figure is published, so this is not the unit to sit between the grid and a desktop
- 1.7 hours to full works out to about 10.5Wh a minute, the slowest refill here, so it recovers roughly half what the AC180 does in a short grid window
- The 400W solar ceiling is the lowest here and needs close to four hours of strong sun to replace a full charge
- The expandable spec reads No, so 1070Wh is where it stops
Key specifications
- Capacity
- 1070Wh
- Weight
- 23.8 lb (10.8 kg)
- AC output
- 1500W (3000W surge)
- Rated cycle life
- 4,000 cycles to 70%
- AC recharge time
- 1.7 hours to full
- Max solar input
- 400W
Every unit in this class holds roughly a kilowatt-hour. Only this one lets you carry it comfortably.
The number that decides it
Divide capacity by weight and the shortlist separates immediately:
- Jackery Explorer 1000 v2: 1070Wh in 23.8 lb, 45.0Wh per pound
- EcoFlow DELTA 2: 1024Wh in 27.0 lb, 37.9Wh per pound
- Anker SOLIX C1000: 1056Wh in 28.4 lb, 37.2Wh per pound
- BLUETTI AC180: 1152Wh in 35.3 lb, 32.6Wh per pound
The Explorer holds 82Wh less than the AC180 and weighs 11.5 lb less. If the unit gets carried more than a couple of times a month, that is not a close call.
What it gives up to get there
The 1500W inverter is the visible cost. It will start a fridge, and the 3000W surge rating exists for exactly that moment, but 1500W continuous is a ceiling you can hit with one appliance. A 1500W heater or kettle uses the entire inverter, leaving nothing for the lights.
The less visible cost is charging. At 1.7 hours to full the unit banks about 10.5Wh a minute, so a 30-minute window on the grid returns roughly 315Wh. The AC180 returns about 615Wh in the same window. For a camping trip that gap is irrelevant. For a house with a flickering supply it is the whole argument.
Runtime, worked through
Allow 10% for conversion loss, a planning assumption rather than a measurement, and 1070Wh becomes about 963Wh:
- Fridge averaging 150W over its duty cycle: about 6.4 hours
- CPAP at 40W with the humidifier off: about 24 hours, close to three nights
- 60W of laptop and router together: about 16 hours
Those are within about half an hour of every other unit here, which is the point worth taking away. Choosing inside this class is not a capacity decision.
Who should choose something else
Anyone whose plan involves solar as the main refill. The 400W input ceiling means roughly four hours of strong sun to replace a full charge before you subtract anything you are running at the same time, and a typical day does not offer many more hours than that. The Anker SOLIX C1000 accepts 600W and is the better fit for a panel-first setup.
- Best for
- Anyone who moves the unit regularly between a vehicle, a campsite or a job and wants a full kilowatt-hour without a two-hand lift every time.
- Choose something else if
- The unit will live plugged in as a standby supply, because no switchover time is published and the refill rate is the slowest of this group.
Best for refilling from solar panels
Anker SOLIX C1000
Anker
The C1000 accepts 600W of solar, the highest ceiling in this class, which is what turns a kilowatt-hour from a fixed ration into something you can replace inside a morning. Everything else about it is competent rather than remarkable, and the pack itself carries the joint shortest rated cycle life here.
What we like about the Anker SOLIX C1000
- 600W solar input is 200W more than the Jackery Explorer 1000 v2 accepts, cutting a full solar refill to roughly two and a half hours of strong sun
- 1800W continuous inverter with 2400W SurgePad gives genuine headroom for a fridge compressor rather than a voltage-reduced figure
- Six AC outlets from 11 ports, matching the EcoFlow DELTA 2 and double the three on the Explorer 1000 v2
- Expandable to 2112Wh with one battery, so the sizing decision is not final on the day you buy
- Under 20ms switchover keeps a router or a desktop running through a cut
Where it falls short for the Anker SOLIX C1000
- Rated 3,000 cycles to 80%, the joint lowest here, which is about 3,168kWh across the pack's rated life against 4,032kWh for the BLUETTI AC180
- Only one expansion battery is supported, so the ceiling is 2112Wh where the EcoFlow DELTA 2 reaches 3040Wh
- 58 minutes to 80% returns about 14.6Wh a minute, roughly 29% less energy per minute of grid than the AC180
- Reaching the 600W ceiling needs roughly 850W of panel, since panels rarely deliver more than about 70% of their rating, so the one specification that sets this unit apart is also the one that asks for the largest array
Key specifications
- Capacity
- 1056Wh
- Max solar input
- 600W
- AC output
- 1800W (2400W SurgePad)
- Weight
- 28.4 lb (12.9 kg)
- AC recharge time
- 58 minutes to 80%
- Expandable
- Yes, to 2112Wh with one expansion battery
Nothing in this class holds enough energy to ignore where the next kilowatt-hour comes from. The C1000 is the unit built around that problem.
Why the input ceiling matters more than the pack
A 1000Wh unit off-grid is not a battery, it is a buffer. It runs down during the evening and has to fill again the next day. How fast that happens is set by the solar input ceiling, and here the spread is wide:
- Anker SOLIX C1000: 600W
- BLUETTI AC180 and EcoFlow DELTA 2: 500W
- Jackery Explorer 1000 v2: 400W
Assume panels deliver about 70% of their rating in good conditions, which is a planning assumption rather than a measurement. The C1000 then pulls roughly 420W and replaces its full 1056Wh in about two and a half hours of strong sun. The Explorer, at roughly 280W, needs closer to four hours. A usable solar day is not much longer than that, so the difference decides whether you can refill and run loads at the same time or have to choose.
The catch sits on the panel side of the cable. Filling a 600W input at that same 70% assumption takes roughly 850W of panel on the ground, which is a larger array than the 400W and 500W units can use at all. Feed the C1000 the 400W array a lighter unit would be happy with and its headline advantage disappears entirely.
What it runs
Take 10% off for conversion loss and 1056Wh becomes about 950Wh:
- Fridge averaging 150W across its duty cycle: about 6.3 hours
- 40W CPAP with the humidifier off: about 24 hours
- 300W of tools and lights on a work bench: about 3.2 hours
The 1800W inverter is what makes the fridge figure real. SurgePad lifts it to 2400W for start-up, and unlike voltage-reducing modes that number applies to a motor.
The cost of the choice
The pack is rated 3,000 cycles to 80%, the joint shortest here. Multiply capacity by cycles and the C1000 is rated to deliver about 3,168kWh in its life, against 4,032kWh for the AC180. At one full cycle a day that is roughly 8.2 years rather than 9.6. Most owners cycle far less than daily, so treat these as floors, but if this unit is going to be the daily energy source for a cabin, the gap is real.
Who should choose something else
If a wall socket does the recharging, the 58-minute figure to 80% is beaten by the AC180 and the solar advantage never comes into play. If you expect to need more than about two kilowatt-hours eventually, the single supported expansion battery caps you at 2112Wh and the DELTA 2 goes further.
- Best for
- Off-grid or outage use where panels rather than a wall socket do most of the recharging, and where a fridge or a pump has to start reliably.
- Choose something else if
- You will cycle the unit hard every day for years, because 3,000 rated cycles ties the DELTA 2 for the shortest rated life in this shortlist.
Best for growing past a kilowatt-hour later
EcoFlow DELTA 2
EcoFlow
The DELTA 2 is the only unit here whose sizing decision is reversible. It starts at 1024Wh and takes extra batteries to 3040Wh, close to three times the storage, without replacing the inverter or the screen. Bought as a standalone kilowatt-hour it is unremarkable, and it ties the Anker SOLIX C1000 for the shortest rated cycle life here.
What we like about the EcoFlow DELTA 2
- Expands to 3040Wh with extra batteries, about 2.97 times the base pack and the highest ceiling in this class
- 1800W continuous inverter matches the largest here, so added storage never runs into an undersized inverter
- 15 ports including six AC outlets, the widest port count of this shortlist
- 37.9Wh per pound at 27.0 lb, so the base unit is still a one-hand carry
Where it falls short for the EcoFlow DELTA 2
- Rated 3,000 cycles to 80%, tied with the C1000 for the shortest here, which is about 3,072kWh of lifetime delivery against 4,032kWh for the BLUETTI AC180
- Switchover is quoted at under 30ms, the slowest published figure here and close to the limit at which a desktop can drop out
- 80 minutes to full is about 12.8Wh a minute, so a 30-minute grid window returns roughly 384Wh against the AC180's 615Wh
- X-Boost reaches 2700W by lowering output voltage, so that number does not apply to a fridge compressor or a pump
- 1024Wh is the smallest pack here, about 128Wh behind the AC180
Key specifications
- Capacity
- 1024Wh
- Expandable
- Yes, to 3040Wh with extra batteries
- AC output
- 1800W (2700W X-Boost)
- Weight
- 27.0 lb (12.2 kg)
- Ports
- 15 total, 6 AC outlets
- Rated cycle life
- 3,000 cycles to 80%
Most people buying a kilowatt-hour are guessing. The DELTA 2 is the unit that lets you correct a wrong guess by adding storage instead of replacing the unit.
The expansion path is the product
Every other unit here is a fixed number. The AC180 and the Explorer 1000 v2 both list expandable as No, and the Anker SOLIX C1000 stops at 2112Wh with its single supported battery. The DELTA 2 reaches 3040Wh.
Work that through against a fridge averaging 150W over its duty cycle, allowing 10% for conversion loss as a planning figure:
- Base 1024Wh: about 6.1 hours
- Expanded 3040Wh: about 18.2 hours
That is the difference between covering an evening and covering an overnight outage plus most of the following day. Crucially the 1800W inverter does not change, so the added storage is usable by the same appliances rather than stranded behind a small inverter.
As a standalone kilowatt-hour
Judged only on the base unit, it is the smallest pack in this guide. 1024Wh against the AC180’s 1152Wh is a 128Wh gap, worth about 46 minutes of fridge time. Not decisive, but it is a loss rather than a win.
The refill rate is the weaker point. 80 minutes to full averages about 12.8Wh a minute, so a half-hour on the grid returns roughly 384Wh. The AC180 returns about 615Wh in the same half hour. If your supply comes back in short bursts, that gap compounds all day.
The switchover caveat
Under 30ms is the slowest switchover figure published in this group, where the C1000 and the AC180 both state under 20ms. For a fridge, a lamp or a phone charger this is irrelevant, because none of them notice a gap that short. For a desktop or a NAS it is close enough to the edge that the unit should not be the only thing standing between the grid and unsaved work.
Who should buy it
Anyone whose requirement is genuinely uncertain. If you are choosing between a kilowatt-hour now and something larger, this is the unit that lets you start small and be wrong without starting again. If your requirement is fixed and portable, the Explorer 1000 v2 carries more energy per pound and stops there deliberately.
- Best for
- Buyers who suspect a kilowatt-hour will not be enough within a year or two and want to add storage rather than replace the whole unit.
- Choose something else if
- You want the most energy per pound today and have no intention of ever buying an expansion battery, since the base pack is the smallest here.
How we researched this guide
Four units in the 1000Wh class were compared using published manufacturer specifications, then set against each other with arithmetic derived from those figures: watt-hours per pound, runtime against named loads, watt-hours banked per minute of charging, hours of sun to refill and lifetime kilowatt-hours from the rated cycle count. None of these units were tested by us, and every review names the sources behind its recommendation.
The full process is on our how we test portable power stations page, including what counts as hands-on use.
- Units evaluated
- 4
- Used hands-on
- 0
- Assessed from documentation and owner reports
- 4
Evaluation methods used: specification comparison
Which one should you buy?
Match your situation on the left to the recommendation on the right.
-
Your grid fails often and comes back in short unpredictable bursts
Recommendation: Buy the BLUETTI AC180, which banks about 615Wh in a 30-minute grid window
-
You lift the unit into a vehicle or carry it to a campsite regularly
Recommendation: Buy the Jackery Explorer 1000 v2 at 23.8 lb, which is 45.0Wh per pound
-
Solar panels rather than a wall socket will do most of your recharging
Recommendation: Buy the Anker SOLIX C1000 for its 600W solar ceiling, the highest here
-
You are not sure a kilowatt-hour will still be enough in a year
Recommendation: Buy the EcoFlow DELTA 2, which expands to 3040Wh on the same 1800W inverter
-
A desktop or a NAS must not reboot when the power drops
Recommendation: Buy the Anker SOLIX C1000 or the BLUETTI AC180, both rated under 20ms switchover
Mistakes buyers make
- Choosing between units in this class on watt-hours, when the whole shortlist fits inside 128Wh and the gap is worth about 46 minutes of fridge time
- Reading the capacity rating as delivered energy, when conversion losses mean you plan with roughly 90% of it
- Assuming a kilowatt-hour covers a day, when a modest household load list adds up to more than four times that
- Ignoring the solar input ceiling and then discovering a full refill needs more strong sun than the day provides
- Comparing cycle ratings without checking the end point, since 4,000 cycles to 70% and 3,000 cycles to 80% are not the same promise
- Buying a fixed-capacity unit when the requirement is still a guess, then owning two units instead of one expandable one
Our final recommendation
If you want one answer rather than a shortlist, this is the unit that suits the widest range of readers in this category.
Best for refilling in short grid windows
A household on an unreliable supply where the unit lives in one spot and has to refill during whatever grid windows appear between cuts.
Questions buyers ask
How long does a 1000Wh power station actually last?
It depends entirely on what you plug in, so divide rather than guess. Take roughly 10% off the rating for conversion loss, then divide by the load in watts. About 950Wh against a 150W fridge is six hours. Against a 40W CPAP it is nearly a full day. Against a 1500W heater it is under 40 minutes. The same battery is a weekend or a coffee break depending on the appliance.
Is 1000Wh enough to get through a power cut?
For an evening, usually. For a full day, no. A fridge alone averaging 150W uses about 3,600Wh over 24 hours, which is more than three times what this class holds. These units are sized for the first six hours of an outage, or for a fridge that you open rarely and a few lights. Anything longer needs solar input, an expansion battery or a larger class entirely.
How many solar panels does a unit this size need?
Enough to reach the unit's input ceiling, which is 400W on the Explorer 1000 v2, 500W on the AC180 and DELTA 2, and 600W on the C1000. Panels rarely deliver their full rating, so assume about 70% in good sun. On that basis the C1000 replaces a full charge in roughly two and a half hours and the Explorer needs closer to four. Anything above the ceiling is wasted.
Do these ratings mean the same thing across brands?
Not always. Recharge claims quote different end points, so 45 minutes to 80% and 80 minutes to full describe different achievements and have to be converted before comparing. Cycle ratings do the same: 4,000 cycles to 70% and 3,000 cycles to 80% measure different amounts of remaining capacity. Convert both to watt-hours per minute and lifetime kilowatt-hours before deciding.
Will a 1000Wh unit still hold up in cold weather?
It will hold less. Every lithium pack loses usable capacity as temperature drops, and LiFePO4 cells will refuse to charge below freezing to protect themselves. A unit left in an unheated garage over winter can deliver noticeably less than its rating and may not accept a charge until it warms. Plan winter outage coverage with less than the number on the box.
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