Head to Head: BLUETTI AC180 vs EcoFlow DELTA 3
Two 1,800W LiFePO4 stations: more capacity in one box, or more surge and room to expand?
Published · Updated
The AC180 has more capacity (1,152Wh vs 1,024Wh). The DELTA 3 has more surge (3,600W vs 2,700W), a published <10 ms switchover, expansion to 5kWh, and weighs about 8 lb less.
- Capacity: AC180 by 128Wh.
- Surge and expansion: DELTA 3.
- Weight: DELTA 3 is about 27.6 lb vs 35.3 lb.
Specs side by side
Manufacturer figures, copied from the sources below; the usable row is our estimate.
| Spec | BLUETTI AC180 | EcoFlow DELTA 3 |
|---|---|---|
| Rated capacity | 1,152Wh | 1,024Wh |
| Estimated usable (AC) | ≈848Wh (estimate) | ≈754Wh (estimate) |
| Battery | LiFePO4, 3,500+ cycles to 80% | LiFePO4, 4,000 cycles to 80%+ |
| AC output | 1,800W (Power Lifting 2,700W for resistive loads; surge 2,700W) | 1,800W (surge 3,600W; X-Boost 2,200W) |
| Wall charging | Up to 1,440W Turbo, about 1.3–1.8 h | Up to 1,500W, 0–100% in 56 min |
| Solar input | 500W max, 12–60V, 10A | 500W max, 11–60V |
| Weight | About 35.3 lb (16 kg) | About 27.6 lb (12.5 kg) |
| Backup switchover | Pass-through charging (no switchover time on the product page) | <10 ms switchover |
| Expansion | Not expandable (can be charged from BLUETTI batteries in Power Bank Mode) | Expandable up to 5kWh with EcoFlow extra batteries |
Where they differ
- Capacity: AC180, ≈848 vs ≈754 Wh usable (estimates).
- Growth: only the DELTA 3 expands.
- Motor starts: DELTA 3's 3,600W surge.
- Charging: DELTA 3 1,500W AC vs AC180 1,440W Turbo; both take 500W solar.
Who should buy which
Buy the AC180 if you want the most energy in one unit and won't expand. Buy the DELTA 3 if you run motor loads, want a fast switchover, or may add batteries later.
FAQ
Where can I see the full specs?
See the BLUETTI AC180 Spec Check and the EcoFlow DELTA 3 Spec Check.
Where do I go next?
Try the power planner to put numbers to your own situation, or see the product picks on the deals page.
Terms used here
- Watt-hour (Wh)
- Energy: one watt for one hour.
- LiFePO4 (LFP)
- Lithium iron phosphate battery chemistry.
- Pass-through charging
- Using a power station while it charges.
Sources
This guide is informational and based on published specifications and general references, not hands-on testing. Check the manufacturer's current specs before you buy.