Jackery Solar Generator 300 and 40W Solar Panel: capacity, output and what it will actually run
A 292 Wh station rated 300 W continuous, measured against the 64 essentials stations in this corpus — including the runtime those two figures imply, which the listing does not state.
Every figure below is read from the manufacturer’s own listing. We do not test power stations and nothing here has been charged, discharged or weighed by anyone on this site. Where the listing is silent, this page prints not stated rather than a plausible default, and the figures that no manufacturer publishes — runtime, energy per kilogram — are arithmetic on the ones that are published, shown with their working.
At a glance
| Specification | Stated |
|---|---|
| Capacity | 292 Wh |
| Continuous output | 300 W |
| Surge output | 600 W |
| Runtime at full output (derived) | 58 min |
| Cell chemistry | LiFePO4 |
| Weight | 5.9 kg (13 lb) |
| Energy per kilogram (derived) | 50 Wh/kg |
| Solar input accepted | 40 W |
| Price band | $200–400 |
| Brand | Jackery |
What it will actually run, and for how long
The two numbers on the front of the box answer different questions. 300 W is the gate: anything drawing more than that will not run at all, whatever the battery holds. 292 Wh is the duration behind the gate. Divide the second by the first and this station runs 58 min at its full rated output — which is the honest way to compare it with another station, and not a number anybody’s usage will match.
Nobody runs a station at its ceiling, so the more useful arithmetic divides the same capacity into loads people own. On 292 Wh this one would run a laptop at 60 W for about 4.9 hours, and a domestic fridge at 150 W for about 1.9 hours. The fridge figure carries a caveat the laptop figure does not: a fridge cycles its compressor rather than drawing continuously, so the real duration is commonly two to three times the number above — and the specification that decides whether it will start the compressor at all is the surge rating, stated here as 600 W.
The runtime figure is arithmetic, and it is optimistic. It is the published capacity divided by the published output, which is the best you could ever get. Real inverters are 85 to 90% efficient, so the usable figure is lower — and no listing on this site states its inverter efficiency, so we do not estimate it. Treat the number as a ceiling and a way to compare like with like, not as a promise.
How it compares with its own class
Against the 64 essentials stations in this corpus, rather than against a generic alternative:
| Measure | This one | Class median | Where it sits |
|---|---|---|---|
| Capacity | 292 Wh | 231 Wh | above the class median of 231 Wh |
| Continuous output | 300 W | 300 W | the same as the class median |
| Surge output | 600 W | 600 W | the same as the class median |
| Runtime at full output (derived) | 58 min | 52 min | above the class median of 52 min |
| Weight | 5.9 kg (13 lb) | 2.6 kg (6 lb) | above the class median of 2.6 kg |
| Energy per kilogram (derived) | 50 Wh/kg | 81 Wh/kg | below the class median of 81 Wh/kg |
| Solar input accepted | 40 W | 60 W | below the class median of 60 W |
A station on the class median is not a worse buy than one above it. Capacity above the median is also weight above it and price above it, and the question that decides the purchase is whether the output clears what you intend to plug in — which is a property of your appliances, not of the median.
Where it suits
- Everything that charges rather than heats: laptops, phones, a router, lighting, a CPAP.
- Regular cycling, since LiFePO4 is specified for several times the cycle life of lithium-ion.
Where it does not
- Anything with a heating element or a compressor. That is the inverter ceiling, and no amount of extra capacity moves it.
- Powering anything overnight. At this capacity the station is a top-up, not a supply.
What the listing claims
These are the manufacturer’s statements, not findings. Nothing on this page has been measured by anyone here, and a specification stated on a listing is a claim until the unit is in front of you.
It states capacity, continuous output, surge output, runtime at full output, cell chemistry, weight.
The gaps matter as much as the figures. A listing that omits a surge rating is not describing a station with a poor one, it is describing itself incompletely — and surge is the specification that decides whether a fridge starts, which is the single most common reason people buy one of these at all.
What no listing on this site tells you
Three things decide whether a power station earns its place, and none of them is a specification any manufacturer publishes. The first is your actual load, in watts, which is a property of your appliances rather than of the station. The figure on the back of an appliance is its maximum draw, not its usual one, and adding those maxima together produces a number far larger than anything you will really pull — but it is the right number for checking against the output rating, because the station has to survive the moment everything runs at once.
The second is how the station gets refilled. From a wall socket that is a matter of hours and of whether you will be somewhere with a wall socket. From solar it is a different calculation entirely: this one accepts 40 W, panels are almost always sold separately, and a panel rated 200 W gathers nothing like 200 W for most of the day. A station accepting 200 W of solar collects perhaps a kilowatt-hour across a good day in good weather. That is a ceiling on how fast it refills, not a promise that it will.
The third is the thing nobody checks until it matters: whether it will run a load while charging, and how fast it switches over when the mains fails. A station that does both is a crude uninterruptible supply for a router or a fridge. A fridge does not care about a few tens of milliseconds of gap; a desktop computer does. Stations built for this state a transfer time, stations that merely tolerate pass-through generally do not, and the distinction is documented inconsistently enough to be worth confirming with the manufacturer before relying on it.
Before you decide
Work out the watts before the watt-hours
The output rating is the gate and the capacity is only the duration behind it. Add up what you intend to run at the same time, compare that with 300 W, and only then ask how many hours you want. Buying more capacity to solve an output problem is the most expensive mistake available here, and it does not work.
Check the surge, not just the running figure
Anything with a motor or a compressor demands several times its running draw for the instant it starts. This one states 600 W, against 300 W continuous. A station comfortably above an appliance’s running watts can still refuse to start it.
Treat marketing language as a claim
Where a phrase on the listing matters to your decision, look for the number behind it: a stated capacity in watt-hours rather than a sentence about lasting for days. Where this site could not find that number, it says not stated.
If the output clears your load and the capacity covers the hours, the current price and availability are on Amazon — this site deliberately does not quote either, because both are stale within days of being read.
Check current price and availability
Compare it against the rest of its class
The finder below is filtered to essentials stations. Every result shows its runtime at full output and is measured against the median for its own class.
64 power stations match
Jackery Solar Generator 300 and 40W Solar Panel,292Wh,300W AC
- At full output
- 58min
- Continuous output
- 300W
- Surge
- 600W
- Cells
- LiFePO4
- Solar input
- 40W
- Weight
- 13lb
Capacity
292Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
50Wh per kg
-33% vs the 74 median — heavier than most of its class for the energy
Capacity is +23% against the class median of 237.
ALLWEI Portable Power Station 300W, 256Wh Solar Generator LiFePO4 Battery
- At full output
- 51min
- Continuous output
- 300W
- Surge
- 600W
- Cells
- LiFePO4
- Solar input
- 100W
- Weight
- 6lb
Capacity
256Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
88Wh per kg
+19% vs the 74 median — more energy for the weight than most of its class
Capacity is +8% against the class median of 237.
300W Portable Power Station 80000mAh LiFePO4 Battery
- At full output
- 51min
- Continuous output
- 300W
- Surge
- not stated
- Cells
- LiFePO4
- Solar input
- 100W
- Weight
- 6lb
Capacity
256Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
87Wh per kg
+17% vs the 74 median — more energy for the weight than most of its class
Capacity is +8% against the class median of 237.
MARBERO 237Wh Solar Generator with Solar Panel Included Portable Power Station 300W Pure Sine Wave with Foldable Solar Panel 60W Set for Camping Outdoor Hiking Fishing Emergency
- At full output
- 47min
- Continuous output
- 300W
- Surge
- 375W
- Cells
- Lithium-ion
- Solar input
- not stated
- Weight
- 9lb
Capacity
237Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
58Wh per kg
-22% vs the 74 median — heavier than most of its class for the energy
Capacity is 0% against the class median of 237.
Portable Solar Generator, 300W Portable Power Station with 40W Solar Panel
- At full output
- 44min
- Continuous output
- 300W
- Surge
- 600W
- Cells
- Lithium-ion
- Solar input
- 40W
- Weight
- not stated
Capacity
220Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
Weight not stated, so energy per kilogram cannot be computed.
Capacity is -7% against the class median of 237.
DaranEner 300W Portable Power Station, 192Wh LiFePO4 Solar Generator
- At full output
- 38min
- Continuous output
- 300W
- Surge
- 600W
- Cells
- LiFePO4
- Solar input
- 60W
- Weight
- 6lb
Capacity
192Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
74Wh per kg
0% vs the 74 median — typical for its class
Capacity is -19% against the class median of 237.
Portable Power Station 300W, 192Wh Large Power Bank with 110V AC Outlet, LiFePO4 Battery Backup, 8- Ports Solar Generator Fast Charaing for Camping, Hurricane Emergency, Outdoor, Home
- At full output
- 38min
- Continuous output
- 300W
- Surge
- 600W
- Cells
- LiFePO4
- Solar input
- 60W
- Weight
- 6lb
Capacity
192Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
73Wh per kg
-2% vs the 74 median — typical for its class
Capacity is -19% against the class median of 237.
Daran 300W Portable Power Station (600W Surge) | 192Wh LiFePO4 Solar Generator for Camping, RV & Emergency | 8-in-1 Lightweight Battery Supply with 60W PD & LED Light for Laptop, Drone
- At full output
- 38min
- Continuous output
- 300W
- Surge
- 600W
- Cells
- LiFePO4
- Solar input
- 60W
- Weight
- 6lb
Capacity
192Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
73Wh per kg
-2% vs the 74 median — typical for its class
Capacity is -19% against the class median of 237.
Portable Power Station 500W, 519.48Wh/140400mAh Solar Generator Backup
- At full output
- 62min
- Continuous output
- 500W
- Surge
- not stated
- Cells
- not stated
- Solar input
- 200W
- Weight
- 14lb
Capacity
519Wh
Essentials · 500 – 1,200 Wh · 40 power stations
Energy per kilogram
81Wh per kg
-8% vs the 88 median — typical for its class
Capacity is -48% against the class median of 1,000.
Jackery Explorer 500 v2 Portable Power Station,512Wh,500W AC
- At full output
- 61min
- Continuous output
- 500W
- Surge
- 1000W
- Cells
- LiFePO4
- Solar input
- not stated
- Weight
- 13lb
Capacity
512Wh
Essentials · 500 – 1,200 Wh · 40 power stations
Energy per kilogram
85Wh per kg
-4% vs the 88 median — typical for its class
Capacity is -49% against the class median of 1,000.
ANTPO 500W Portable Power Station, 500Wh LiFePO4 Solar Generator Pure Sine Wave 110V AC Car Outlets PD 60W QC3.0 Backup Power Supply Bank for Camping, Blackout,
- At full output
- 60min
- Continuous output
- 500W
- Surge
- 1000W
- Cells
- LiFePO4
- Solar input
- 200W
- Weight
- not stated
Capacity
500Wh
Essentials · 500 – 1,200 Wh · 40 power stations
Energy per kilogram
Weight not stated, so energy per kilogram cannot be computed.
Capacity is -50% against the class median of 1,000.
2026 Portable Power Station 700W Surge, 288Wh LiFePO4 Battery Backup, Power Bank with AC Outlet 350W/110V, Solar Generator Fast Charging for Camping Essentials, Hurricane Emergency, Home, Road Trips
- At full output
- 49min
- Continuous output
- 350W
- Surge
- 700W
- Cells
- LiFePO4
- Solar input
- not stated
- Weight
- 7lb
Capacity
288Wh
Essentials · under 500 Wh · 42 power stations
Energy per kilogram
88Wh per kg
+19% vs the 74 median — more energy for the weight than most of its class
Capacity is +22% against the class median of 237.
Related
- Essentials Power Stations — the full class, with baselines for every specification.
- How long will a power station actually run? — the arithmetic, and where it misleads.
- The full power station finder — unfiltered, every class.
- How we compile these figures.