Comparison
EcoFlow DELTA 2 vs Bluetti AC180: Which Should You Buy? (2026)
| At a glance | EcoFlow DELTA 2 | Bluetti AC180 |
|---|---|---|
| Rating | ★★★★⯨ 4.6/5 | ★★★★⯨ 4.5/5 |
| Price | $499-$699 | $449-$699 |
| Best for | People who value the fastest recharge and want a system they can expand with extra batteries later. | Home backup buyers who want maximum capacity per dollar and don't move the unit often. |
| Guarantee | Amazon return policy applies | Amazon return policy applies |
| Check Today's Price → | Check Today's Price → |
These two occupy the same slot: roughly a kilowatt-hour of LiFePO4 battery, an 1800W inverter, up to 500W of solar input, and wall charging fast enough that "did I remember to top it off?" stops being a planning problem. They're priced within shouting distance of each other and rated 4.6 and 4.5. So the honest version first: these are near-twins, either will do the job, and the decision comes down to one structural difference plus a handful of small ones.
The structural difference is what each station is allowed to become. The DELTA 2 is built to grow — EcoFlow sells add-on batteries that take it up to 3kWh, so today's purchase can be the seed of a bigger backup system. The AC180 makes no such promise; its pitch is more battery in the box right now, 1152Wh against the DELTA 2's 1024Wh, frequently at the lowest street price of anything in this class.
The picks
EcoFlow DELTA 2
A fast-charging 1024Wh station whose X-Boost trick lets it punch above its 1800W rating.
$499-$699 · Amazon return policy applies
Bluetti AC180
A slightly larger 1152Wh battery with a 2700W surge ceiling, often the cheapest of the bunch.
$449-$699 · Amazon return policy applies
The small differences, honestly weighed
Charging is a wash. Both hit 80% from a wall outlet in under an hour — the AC180 in about 45 minutes, the DELTA 2 in about 50. Nobody should decide anything based on five minutes.
Surge power differs more on paper than in your garage. The AC180's Power Lifting mode reaches 2700W and the DELTA 2's X-Boost tops out at 2200W, but both tricks only work on resistive loads — kettles, hair dryers, space heaters. Neither helps a motor start. Your fridge or well pump only sees the base 1800W inverter, which is identical on both.
Longevity tilts slightly toward Bluetti: 3,500+ rated cycles against 3,000+. At a cycle a day, either lasts years, so treat this as a tiebreaker rather than a reason.
Weight tilts toward EcoFlow, and this one is real. Roughly 27 pounds versus roughly 35. Eight pounds doesn't sound like much until you're hauling the thing across a campsite or up basement stairs. If your unit will travel, that's a genuine point for the DELTA 2 — along with its 5-year warranty and a somewhat more polished app. Two nits on the EcoFlow side: its fan can get audible under heavy load, and its cycle rating trails some newer rivals.
Who should skip both
If your actual goal is whole-home backup — furnace, well pump, central AC — neither of these is the tool. A kilowatt-hour and 1800W is fridge-and-lights territory, not breaker-panel territory, and buying either expecting more ends in disappointment. At the other extreme, if you only need phones and a laptop alive through a weekend, both are overkill; a smaller, cheaper station does that at a fraction of the weight. And if you want surge headroom specifically to start power tools or a compressor, don't let either spec sheet fool you — those boost modes won't do it.
Bottom line
Buy the AC180 if it's going to live on a shelf: more battery, more rated cycles, usually less money, and the weight never matters when it doesn't move. Buy the DELTA 2 if it leaves the house regularly or might become the base of a larger system: it's lighter, it expands to 3kWh, and the warranty runs five years. At equal prices the DELTA 2 is the more flexible machine; when the AC180 sits at the bottom of its range, it's the better deal. Check both prices before you commit — these two get discounted often, and the current gap usually settles the argument.