The catch
EcoFlow DELTA 3 Plus
Despite a similar 1kWh battery, its 1,800W continuous inverter is lower than the C1000 Gen 2’s. X-Boost leaves that normal output limit unchanged.
Side by side
Easier lifting and a two-input solar setup point to the DELTA 3 Plus. For longer use from the base battery next to a fixed appliance, the AC180 fits.
Before you buy
At a steady 300W load, BLUETTI AC180 models to 3.1 hours and EcoFlow DELTA 3 Plus to about 2.7 hours.
Where this comes from
With inputs of 1024Wh and 1152Wh, hours = nominal Wh × 0.8 / 300W. The 80% factor is a shared planning allowance for unusable energy and conversion losses and not a measured efficiency. Runtime shifts with idle draw, temperature and the real load.
The catch
Despite a similar 1kWh battery, its 1,800W continuous inverter is lower than the C1000 Gen 2’s. X-Boost leaves that normal output limit unchanged.
The catch
It weighs about 35.27 pounds, much more than newer 1kWh models, and has just one USB-C port.


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The DELTA 3 Plus is the choice for easier lifting and a two-input solar setup. The AC180 suits longer use from the base battery beside a fixed appliance.
Solar differs more than battery capacity does
Which one fits
At 27.6 lb against 35.27 lb, DELTA 3 Plus saves 7.67 lb per lift, whereas the AC180 battery adds about 20 modeled minutes at 300W.
The DELTA weighs 27.6 pounds, versus 35.27. The AC180’s capacity advantage is worth about 20 modeled minutes at 300W, so the carry penalty is easy to weigh.
In the shared planning case, EcoFlow DELTA 3 Plus gets 2.7 hours and BLUETTI AC180 gets 3.1. Measure actual wattage before choosing a required overnight reserve.
EcoFlow DELTA 3 Plus tops out at 1000W of input and BLUETTI AC180 at 500W. Compare your actual panel strings with the voltage and current limits as well as this total.
In practice
At a steady 300W load, BLUETTI AC180 models to 3.1 hours and EcoFlow DELTA 3 Plus to about 2.7 hours.
With inputs of 1024Wh and 1152Wh, hours = nominal Wh × 0.8 / 300W. The 80% factor is a shared planning allowance for unusable energy and conversion losses and not a measured efficiency. Runtime shifts with idle draw, temperature and the real load.
BLUETTI AC180 stores 32.7 nominal watt-hours per pound, while EcoFlow DELTA 3 Plus stores about 37.1.
Nominal energy over published weight works out to 1024 / 27.6 and 1152 / 35.27. It compares stored energy per lifting weight only. Neither efficiency nor handle comfort was measured.
Versus AC180, DELTA 3 Plus reduces carry weight by about 22% and doubles the maximum combined solar intake.
1000 / 500 = 2, and (35.27 - 27.6) / 35.27 × 100 = 21.7%. Two compatible inputs are required to reach the DELTA total.

EcoFlow, DELTA 3 Plus
This 1,024Wh station cares more about quick solar recovery and high-power USB-C than about headline battery size. Its two 500W solar inputs can each take a separate panel string.

BLUETTI, AC180
This 1,152Wh station has four US AC outlets, a wireless charging pad and a 1,800W inverter. The extra battery reserve means a noticeably heavier carry.
Spec by spec
| Spec | EcoFlow DELTA 3 Plus | BLUETTI AC180 | In practice |
|---|---|---|---|
| Nominal battery energy | 1024 Wh | 1152 Wh | The starting runtime budget comes from stored energy. |
| Continuous AC output | 1800 W | 1800 W | Load screening uses this sustained rating, which is separate from surge and boost modes. |
| Lifting weight | 27.6 lb | 35.27 lb | Flat ground is where wheels help. A trunk, step or shelf still takes a lift. |
| Maximum solar input | 1000 W | 500 W | Panel voltage, current and per-port limits have to fit as well. |
| Dedicated battery expansion | Supported with compatible equipment | Fixed base capacity | Integrated battery expansion is not the same as charging from an external source. |
| Published transfer limit | 10 ms | 20 ms | Check the exact device being connected. Even a short transfer specification can’t guarantee that every load runs without interruption. |
Trade-offs
Decision guide
Pick the DELTA 3 Plus for easier lifting and a two-input solar setup. Pick the AC180 for longer use from the base battery beside a fixed appliance.
The DELTA 3 Plus can take 1,000W across two inputs, versus 500W for the AC180. The AC180 has only 128Wh more battery capacity, so off grid, solar layout can matter more.
The DELTA weighs 27.6 pounds, versus 35.27. The AC180’s capacity advantage is worth about 20 modeled minutes at 300W, so the carry penalty is easy to weigh.
Continuous output is 1,800W on each. Once your appliance fits that rating, decide on runtime, charging and handling, and leave boost-mode headlines out of it.
By the numbers
What we found across the portable power stations we compare, plus the checked facts behind each finding.
Only 6 of the 50 models checked meet every need here: “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”.
6 models fit, out of 50 checkedBLUETTI AC180 lists 1,152 Wh for battery capacity, 13% more than the 1,024 Wh on EcoFlow DELTA 3 Plus.
How we countedThe count uses each product's current fit ratings for “I need power at campsites and on weekends away”, “I want backup power for the essentials at home”, and “Solar will be a real part of how I recharge”. A need with no documented match is not counted.
How we calculatedThese are nominal watt-hour ratings. How much energy you get out depends on inverter losses, temperature and load. For context, 50 of 50 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| EcoFlow DELTA 3 Plus |
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| BLUETTI AC180 |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

Lift the station often
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Slightly longer runtime from the base battery
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