Head-to-head
BLUETTI AC180 vs EcoFlow DELTA 2
Two 1,800W rivals with nearly identical jobs but opposite philosophies. Short version: the BLUETTI AC180 gives you more capacity, faster charging, and a longer cycle rating; the EcoFlow DELTA 2 is 8 lbs lighter, expandable, and hits lower sale prices. Here's the full breakdown.
Spec table
| Spec | BLUETTI AC180 | EcoFlow DELTA 2 |
|---|---|---|
| Battery capacity | 1,152 Wh | 1,024 Wh |
| Continuous output | 1,800W | 1,800W (X-Boost to ~2,400W) |
| Surge power | 2,700W (Power Lifting mode, resistive loads) | 2,700W (official spec) |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Cycle life rating | 3,500+ cycles to 80% | 3,000 cycles to 80%+ |
| Weight | 35.3 lbs | 27 lbs |
| Expandable battery | No | Yes — to 2,048 or 3,040Wh |
| AC recharge speed | 1,440W input — 0–80% in ~45 min | 1,200W input — 0–80% in ~50 min |
| Max solar input | 500W | 500W |
| Warranty | 5 years | 5 years |
| Typical price range | $449–$499 | $349–$699 |
Specs verified October 2026 from bluettipower.com and ecoflow.com / reputable retailers. Prices are observed ranges, not live prices.
The 5 differences that actually matter
1. Capacity: 1,152Wh vs 1,024Wh
The AC180 holds about 12% more energy — roughly an extra 2 hours of fridge runtime or half a night of CPAP. It's a real edge, and at typical street prices (~$449 for the AC180) it works out to the best dollars-per-watt-hour we've seen in this class. But 128Wh won't change what you can run, only how long.
2. Weight: 35.3 lbs vs 27 lbs
This is the DELTA 2's biggest everyday advantage. Eight pounds doesn't sound like much until you're carrying the unit up stairs, loading it into a car, or moving it between rooms during an outage. If the station travels, the DELTA 2 wins this category outright.
3. Expandability: only the DELTA 2 grows
The DELTA 2 accepts add-on batteries up to 3,040Wh total. The AC180's capacity is fixed at 1,152Wh forever. This is the single most future-proofing-relevant difference: if there's any chance your needs grow — longer outages, an extra fridge, more devices — only the DELTA 2 lets you upgrade instead of replacing.
4. Recharge speed: AC180 is faster
The AC180's 1,440W AC input fills 0–80% in about 45 minutes vs ~50 minutes for the DELTA 2's 1,200W input. Both are fast enough that the difference only matters if you're racing a short generator window or brief sun. Solar input is a 500W tie.
5. The high-wattage modes, honestly explained
Both brands advertise ways to exceed 1,800W, and both come with asterisks. BLUETTI's "Power Lifting" (2,700W) works only on resistive loads like heaters and kettles — it won't help a motor-driven tool. EcoFlow's X-Boost (up to ~2,400W) similarly trims voltage to resistive loads. Neither turns an 1,800W inverter into a 2,400W one for everything. Treat both as a bonus for heating elements, not a spec to plan around.
Verdict by use case
| Your situation | Pick | Why |
|---|---|---|
| Maximum energy per dollar | AC180 | 1,152Wh at ~$449 is the best $/Wh we've seen here |
| Carrying it upstairs / traveling | DELTA 2 | 27 vs 35.3 lbs — no contest |
| You might need more capacity later | DELTA 2 | Only one with expandable batteries |
| Longest battery lifespan priority | AC180 | 3,500+ vs 3,000 cycles to 80% |
| Fastest recharge between uses | AC180 | 1,440W AC input, 0–80% in ~45 min |
| Lowest price on a good sale day | DELTA 2 | Seen as low as ~$349; AC180's floor is ~$449 |
| Running a fridge through an outage | Either | Both handle it comfortably; AC180 runs ~12% longer per charge |
Check current price — BLUETTI AC180 Check current price — EcoFlow DELTA 2 Check price on Amazon — EcoFlow DELTA 2
Plain links to the brands' official stores. Typical ranges: AC180 $449–$499 · DELTA 2 $349–$699.
Want more options? See the full under-$1,000 roundup and our emergency preparedness picks, or run your devices through the sizing calculator.
Related guide: our standalone BLUETTI AC180 review covers full specs, estimated runtimes, and honest limitations.