Every small solar generator with an AC outlet in this comparison stores between 26 and 36 watt-hours per pound. In practice, a ~288Wh unit weighs 8 to 10.5 lb whichever brand you buy. The brand you pick changes weight by about 2 lb. The capacity you pick changes it by 15. Treat "small" as a capacity class first and a brand choice second.
The metric used here: Wh per pound. It's the battery's rated capacity in watt-hours divided by the unit's listed weight. It tells you how much stored energy you carry for each pound in your pack or trunk. A higher number means more runtime per pound. It covers the power station only, not the solar panel. That's a second weight decision (see below).
Methodology
Sample: 11 compact power stations sold in the US as of September 2026, ranging from 204Wh to 768Wh. Data source: Each manufacturer's listed battery capacity (Wh) and weight. Where sources disagreed on weight, we used the heavier figure. (EcoFlow's River 3 Plus is listed at both 4.2 kg and 4.7 kg.) Runtime math: Usable energy = rated Wh × 0.85, allowing about 15% for inverter and conversion losses. Runtimes assume a 65W laptop load and a 40W average draw for a 12V compressor fridge. That's a typical cycling average, not the running wattage. What this isn't: We did not weigh or drain-test these units ourselves. These are published specs run through the same formula, so they're comparable with each other. They're not lab results.
Weight-to-runtime table: 11 small solar generators
| Unit | Capacity | Weight | Wh per lb | Laptop (65W) | 12V fridge (40W avg) | |---|---|---|---|---|---| | Jackery Explorer 300D (DC only) | 288Wh | 5.5 lb | 52.4 | ~3.8 hr | ~6.1 hr | | Jackery Explorer 300 v2 | 288Wh | 8.1 lb | 35.6 | ~3.8 hr | ~6.1 hr | | Bluetti AC70 | 768Wh | 22.5 lb | 34.1 | ~10 hr | ~16 hr | | Jackery Explorer 240 v2 | 256Wh | 7.9 lb | 32.4 | ~3.4 hr | ~5.5 hr | | Anker SOLIX C800 Plus | 768Wh | 24 lb | 32.0 | ~10 hr | ~16 hr | | DJI Power 500 | 512Wh | 16.1 lb | 31.8 | ~6.7 hr | ~11 hr | | Anker SOLIX C300X | 288Wh | 9.1 lb | 31.6 | ~3.8 hr | ~6.1 hr | | Anker SOLIX C300 DC (DC only) | 288Wh | 9.2 lb | 31.3 | ~3.8 hr | ~6.1 hr | | Bluetti Elite 30 V2 | 288Wh | 9.5 lb | 30.3 | ~3.8 hr | ~6.1 hr | | EcoFlow River 3 Plus | 286Wh | 10.4 lb | 27.5 | ~3.7 hr | ~6.1 hr | | Bluetti AC2A | 204Wh | 7.9 lb | 25.8 | ~2.7 hr | ~4.3 hr |
What the table tells you, in order of importance:
- Capacity decides runtime. Weight follows along. Every 288Wh unit gets the same ~3.8 laptop hours, whether it weighs 5.5 lb or 10.4 lb. What you pay for with the extra weight is features: bigger AC inverters, UPS switchover, app control and expansion ports. You don't get more runtime.
- The Jackery Explorer 300D is the only real outlier, and it comes with conditions. At 52 Wh/lb it's far lighter than anything else here. But it caps output at 140W and has no AC outlet. It's a big USB/12V battery, not a small generator in the usual sense. Check its cell chemistry and cycle rating before assuming it matches the LiFePO4 units' 3,000-cycle lifespans.
- Among units with AC outlets, the Jackery 300 v2 leads at 35.6 Wh/lb. That's 1.3 to 2.3 lb lighter than the other 288Wh units with the same stored energy.
- Going bigger doesn't cost you weight efficiency. The 768Wh Bluetti AC70 (34.1 Wh/lb) is about as efficient per pound as the 288Wh units. If you're willing to carry 22 lb, you get 2.7x the runtime at nearly the same ratio.
- The EcoFlow River 3 Plus and Bluetti AC2A come last on this metric only. The River 3 Plus trades weight for a 600W inverter, UPS and expansion batteries. The AC2A is simply a smaller battery in a similar-size shell.
What "small" can't do
A ~288Wh unit is a phone-laptop-lights-fridge-for-an-afternoon battery. After losses it holds about 245 usable watt-hours. That covers roughly 15 phone charges, a night of LED lighting, or 6 hours of a 12V compressor cooler. It won't run a coffee maker, hair dryer, space heater or microwave for any useful length of time, even when the inverter can technically start them. A 1,000W kettle would drain it in about 15 minutes. For the full breakdown of where a power bank ends and a power station begins, see our solar power bank vs. portable power station comparison.
The "solar" in "solar generator" is where small units disappoint most. Most in this class accept 100-220W of solar input. A 100W panel in real conditions typically delivers 60-75W, so refilling 288Wh takes about 4-5 hours of good sun. That's a full sunny day in spring or fall and not possible in winter. If you use more than about 250Wh a day, a small unit will slowly drain across a multi-day trip no matter how nice the panel is. Our solar generator sizing calculator does this math for your specific loads. And if you're wondering why a folding panel under-delivers against its label, our foldable solar panels breakdown covers the gap.
Don't forget the panel's weight
The table covers the battery only. A standard 100W folding panel such as Jackery's SolarSaga 100 is listed at about 10.3 lb, more than the Jackery 300 v2 it's meant to charge. Newer "light" 100W panels come in around 4.5 lb at a higher price. For backpacking or anything carried more than a short distance from the car, the panel choice can matter as much as the station. Our lightweight backpacking solar panels guide compares those.
Are small solar generators worth it?
Yes, if your daily load is under about 250Wh (phones, a laptop, lights, a 12V cooler for part of the day) and you value quiet, fume-free power at a campsite or during a short outage. They're not worth it as a home backup plan: a single fridge on AC through an inverter will drain a 288Wh unit in well under a day. If that's the goal, start here instead.
On "best rated by Consumer Reports": CR's power station ratings are paywalled, so we can't verify or cite them. Most of its free coverage is about gas portable generators. The Wh-per-pound ratio above lets you compare any unit using numbers printed on the box.
The buying rule
Pick the capacity first: roughly 250-300Wh for a weekend of devices, 500-800Wh if a 12V fridge runs all day. Then, within that capacity, pick the unit with the highest Wh per pound that still has the ports you need. Across brands in the same class, weight varies by about 2 lb. Going up or down a capacity class changes it by 8 to 15 lb. That capacity decision matters more than any "best small solar generator" ranking.