EcoFlow DELTA 3 Plus vs BLUETTI AC180
A bigger battery with more sockets against a lighter one that takes twice the solar and grows to 5kWh. It is less close than it looks.
The verdict: buy the EcoFlow DELTA 3 Plus unless you specifically want the biggest battery in the class and four AC sockets in a unit that will not move. The EcoFlow takes twice the solar input, weighs 7.7 lb less, expands to 5kWh, switches over faster, surges higher and carries an IP65 rating. The BLUETTI's answer is 128Wh more battery, twice the sockets, and an explicit pass-through disclosure — a real but narrow case.
This is the comparison where a spec table actually settles things, because the two units are not optimized for the same buyer at all. One is a mobile, expandable solar platform. The other is a big quiet box for a fixed job.
The decision table
| EcoFlow DELTA 3 Plus | BLUETTI AC180 | |
|---|---|---|
| Capacity | 1,024Wh | 1,152Wh |
| Weight | 27.6 lb | 35.27 lb |
| Wh per pound | 37.1 | 32.7 |
| AC continuous | 1,800W (2,200W X-Boost) | 1,800W |
| Surge | 3,600W | 2,700W |
| Max solar input | 1,000W (2 x 500W MPPT) | 500W |
| AC recharge | 56 min at 1,500W input | 1.3-1.8 hr at up to 1,440W |
| UPS switchover | Under 10 ms | 20 ms |
| Cycle rating | 4,000 to 80%+ | 3,500+ to 80% |
| Expandable | Yes, to 5kWh | No |
| AC sockets | 6 | 4 |
| Best USB-C | 2 x 140W | 1 x 100W |
| Weather rating | IP65 | Not published |
| Operating temperature | Not published | 0°C to 40°C |
| Pass-through charging | Not stated explicitly | Yes |
| Car charging | Up to 800W | Not published |
| Warranty | 5 years | 5 years |
Where the EcoFlow wins, which is most places
Solar input, by double. 1,000W across two 500W MPPT channels against 500W total. For anyone intending to live off panels this is not a margin, it is the entire decision — the input ceiling on the box is the one spec you cannot upgrade later by buying more panel. How much solar input you need explains why this governs everything about off-grid charging.
Expansion to 5kWh. The AC180 is fixed at 1,152Wh for the life of the unit. The DELTA 3 Plus head unit can grow nearly fivefold. If your requirement is uncertain — a van build, a first RV season, an outage plan that keeps getting more ambitious — that difference is worth more than any single spec on this table.
Weight, by 7.7 lb. 37.1Wh per pound against 32.7 is a 13% advantage, and in absolute terms the BLUETTI is 28% heavier for 12.5% more battery. That is a poor exchange rate if the unit moves at all. The weight guide makes the case properly.
Surge headroom, by 900W. 3,600W against 2,700W, with 2,200W available through X-Boost for resistive loads. Same 1,800W continuous rating, but the EcoFlow has considerably more room for a compressor start — which is exactly the spec that decides whether a full-size fridge runs. Can a power station run a refrigerator covers why surge beats capacity for that question.
Charging in every direction. 56 minutes from the wall against 1.3-1.8 hours, up to 800W of alternator charging where BLUETTI publishes no car-charging figure at all, and 1,000W of solar. Three fast refill routes against one adequate one.
The smaller things that add up: six AC sockets against four, two 140W USB-C ports against one 100W, an IP65 rating for sitting outside with panels, a 4,000-cycle rating to 80%+ against 3,500+ to 80%, and an under-10 ms switchover against 20 ms.
Where the BLUETTI wins
128Wh more battery — 1,152Wh against 1,024Wh, a 12.5% edge. It is the largest battery in the 1kWh class we cover, and in a fixed role where weight is irrelevant that is simply more of the thing you bought.
Published pass-through charging. BLUETTI prints "Pass-through Charging: Yes" directly on the specification page. EcoFlow does not state it explicitly in the specs we read. That is a documentation win rather than a capability win, but if you are buying for permanent plugged-in duty, knowing beats inferring. Pass-through charging explained covers why the distinction matters.
A published temperature range. BLUETTI publishes 0°C to 40°C, with output capped at 1,500W maximum in the 30-40°C band. EcoFlow publishes no temperature figures for the DELTA 3 Plus at all. If the unit lives in a garage or a hot van, one of these makers has told you something and the other has not. Power stations in cold weather sets out why this disclosure is worth looking for.
Socket variety for a shared job. Four AC sockets, four USB-A ports, a 100W USB-C, a 12V/10A DC socket and a 15W wireless charging pad. For a unit sitting on a table that several people plug into, that spread is more useful than a higher solar ceiling.
Pick the EcoFlow if
- Solar is part of the plan, especially more than 500W of panel.
- Your capacity requirement might grow — van, RV, longer outages.
- The unit moves between a vehicle, a campsite and a house.
- You need surge headroom for a full-size fridge or a compressor.
- It will sit outside with an array and a weather rating matters.
Pick the BLUETTI if
- The unit has a fixed home and will rarely be lifted.
- You want the largest battery in the class and will not add panels.
- Several people plug into it and socket count decides the day.
- You want pass-through charging stated explicitly rather than inferred.
- A published operating temperature range matters for where it lives.
Our view
The BLUETTI is a good unit and the AC180 earns its place in our reviews and the camping roundup's car-camping slot, where a big battery and four sockets in a boot is exactly right. But across this specific comparison the EcoFlow wins on seven axes and loses on three, and two of the three losses are documentation rather than capability. Unless you have identified the narrow case where socket count and battery size outrank everything else, the DELTA 3 Plus is the better purchase.
If you want the brand-level version of this question, all four brands compared and BLUETTI vs Jackery go wider. The main roundup ranks both against six other units.
The picks in full
1. The better buy for most people
EcoFlow DELTA 3 Plus
- 1,024Wh
- LFP (LiFePO4)
- 1,800W continuous / 3,600W surge
- 27.6 lb
- 1000W
- 4,000 cycles to 80%+ capacity
- Full in 56 min (1,500W AC input)
- 5 years
1,000W of solar input across two MPPT channels and a path to 5kWh is the combination that wins this comparison. Those are the two specifications you cannot change after purchase, and the DELTA 3 Plus has roughly double and roughly five times what the AC180 offers respectively. Everything else here is adjustable later; those two are not.
It is also the lighter unit by 7.7 lb, the faster one from the wall at 56 minutes, the one with more surge headroom at 3,600W, the one with more sockets at six AC, and the one with an IP65 rating for sitting out in weather with an array. Add up to 800W of alternator charging and it has three serious refill routes where the BLUETTI has one.
What you give up is 128Wh of battery and some documentation: EcoFlow publishes no temperature range for this model and does not state pass-through charging explicitly in the specs we read. Expansion batteries are also separate purchases, so the 5kWh figure is a path rather than a product.
Reasons to buy
- 1,000W solar input across two MPPT channels — double the BLUETTI
- Expandable to 5kWh; the BLUETTI is fixed forever
- 27.6 lb against 35.27 lb, and 37.1Wh per pound against 32.7
- 3,600W surge and 2,200W via X-Boost; under-10 ms UPS switchover
- Six AC sockets, two 140W USB-C ports, IP65 rated, 800W car charging
Reasons to avoid
- 1,024Wh — 128Wh less battery than the BLUETTI
- No temperature range published for this model
- Pass-through charging not stated explicitly in the specs we read
- The 1,000W solar figure requires two separate arrays
Buy it if: solar, growth, movement, and surge headroom for a compressor.
Skip it if: the unit never moves and you simply want the biggest battery with the most sockets.
2. Pick this for a fixed job with many plugs
BLUETTI AC180
- 1,152Wh
- LiFePO4
- 1,800W continuous / 2,700W surge
- 35.27 lb
- 500W
- 3,500+ cycles to 80% original capacity
- 1.3-1.8 hr full (1,440W max AC input)
- 5 years
1,152Wh is the largest battery in the 1kWh class we cover, and four AC sockets, four USB-A ports, a 100W USB-C, a 12V/10A socket and a 15W wireless pad is the most generous socket spread here. For a unit that lives in one place and gets plugged into by several people, that is the specification that actually gets used.
BLUETTI is also the better documented of these two in the ways that matter for a stationary unit: it prints pass-through charging as a yes on the spec page, publishes an operating range of 0°C to 40°C with a note that output caps at 1,500W above 30°C, and publishes a 20 ms UPS switchover and a 1.3-1.8 hour recharge at up to 1,440W input. 3,500+ cycles to 80% original capacity is a long life for standby duty.
The costs are real and they are structural. 500W of solar input is half the EcoFlow's ceiling and cannot be raised. It is not expandable. 2,700W of surge is 900W less headroom for a compressor start. And 35.27 lb for 1,152Wh is 32.7Wh per pound, the worst ratio in its class here.
Reasons to buy
- 1,152Wh — the largest battery in its class here
- Four AC sockets plus four USB-A, a 100W USB-C and a 15W wireless pad
- Publishes pass-through charging explicitly, and an operating range of 0°C to 40°C
- 3,500+ cycles to 80% original capacity; 20 ms UPS switchover
- 1.3-1.8 hour full recharge at up to 1,440W input
Reasons to avoid
- 500W solar input, half the EcoFlow's ceiling, and not raisable
- Not expandable at all
- 2,700W surge against the EcoFlow's 3,600W
- 35.27 lb — 32.7Wh per pound, the worst in its class here
Buy it if: a fixed position, a shared table, and a job that never needs more than 500W of panel.
Skip it if: solar, expansion or carrying are any part of the plan.
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