The catch
BLUETTI AC180
It weighs about 35.27 pounds, much more than newer 1kWh models, and has just one USB-C port.
Side by side
Go with the DELTA 3 if you want a lighter carry, expansion and faster transfer. The AC180 brings more built-in energy if it will sit beside the load.
Before you buy
At a steady 300W load, the model gives about 3.1 hours for BLUETTI AC180 and 2.7 hours for EcoFlow DELTA 3.
Where this comes from
Inputs are 1152Wh and 1024Wh, and hours = nominal Wh × 0.8 / 300W. Both use the same 80% factor as a planning allowance for unusable energy and conversion losses and not as a measured efficiency. Runtime changes with idle draw, temperature and the real load.
The catch
It weighs about 35.27 pounds, much more than newer 1kWh models, and has just one USB-C port.
The catch
A single 500W solar input can’t take advantage of the 1000W two-input setup on the Plus model.


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The DELTA 3 is the choice for a lighter carry, expansion and faster transfer. When the unit stays beside the load, the AC180 offers more built-in energy.
Capacity and portability work against each other
Which one fits
The AC180 gives you 128Wh more, while the DELTA 3 takes off 7.67 pounds. On a 300W desk setup, the modeled gain is roughly 20 minutes and not several extra hours.
AC180 weighs 35.27 lb and DELTA 3 weighs 27.6 lb. That makes every lift 7.67 lb lighter, at a cost of about 20 modeled minutes at a steady 300W load.
In the shared planning case, BLUETTI AC180 delivers 3.1 hours and EcoFlow DELTA 3 delivers 2.7. Before choosing a required overnight reserve, measure the actual wattage.
BLUETTI AC180 accepts at most 500W and EcoFlow DELTA 3 accepts at most 500W. Weigh your real panel strings against the voltage and current limits as well as this total.
In practice
At a steady 300W load, the model gives about 3.1 hours for BLUETTI AC180 and 2.7 hours for EcoFlow DELTA 3.
Inputs are 1152Wh and 1024Wh, and hours = nominal Wh × 0.8 / 300W. Both use the same 80% factor as a planning allowance for unusable energy and conversion losses and not as a measured efficiency. Runtime changes with idle draw, temperature and the real load.
EcoFlow DELTA 3 stores 37.1 nominal watt-hours per pound, against about 32.7 for BLUETTI AC180.
The calculation is nominal energy over published weight, 1152 / 35.27 and 1024 / 27.6. It compares stored energy per lifting weight and doesn’t measure efficiency or handle comfort.
DELTA 3 sheds about 22% of the AC180 weight and gives up about 11% of its nominal battery capacity.
Weight: (35.27 - 27.6) / 35.27 × 100 = 21.7%. Capacity: (1152 - 1024) / 1152 × 100 = 11.1%.

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.

EcoFlow, DELTA 3
This expandable DELTA 3 is for buyers who can do without the extra solar input of the Plus model. Battery and inverter are the same size, so the simpler charging setup may be all you need.
Spec by spec
| Spec | BLUETTI AC180 | EcoFlow DELTA 3 | In practice |
|---|---|---|---|
| Nominal battery energy | 1152 Wh | 1024 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 | 35.27 lb | 27.6 lb | Flat ground is where wheels help. A trunk, step or shelf still takes a lift. |
| Maximum solar input | 500 W | 500 W | Panel voltage, current and per-port limits have to fit as well. |
| Dedicated battery expansion | Fixed base capacity | Supported with compatible equipment | Integrated battery expansion is not the same as charging from an external source. |
| Published transfer limit | 20 ms | 10 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 for a lighter carry, expansion and quicker transfer. If the AC180 stays beside the load, it provides more built-in energy.
The AC180 gives you 128Wh more, while the DELTA 3 takes off 7.67 pounds. On a 300W desk setup, the modeled gain is roughly 20 minutes and not several extra hours.
For equipment with a short hold-up time, the published 20ms versus 10ms limits favor the DELTA 3. Neither figure promises that every computer will stay running.
Each lists a 500W maximum solar input. Even so, panel voltage, current, connector and cold-weather open-circuit voltage still have to match the specific input.
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.
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 |
|---|---|---|---|
| BLUETTI AC180 |
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| EcoFlow DELTA 3 |
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Ready to buy
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