EcoFlow DELTA 3 Max Plus vs Bluetti AC70
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
Bluetti AC70 costs $800 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Max Plus holds 167% more energy (2048Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Max Plus has 4000W more surge headroom (6000W vs 2000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC70 is 35.3 lb lighter (22 lb vs 57.3 lb).
- EcoFlow DELTA 3 Max Plus is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Max Plus
Adds 600W of continuous output and doubles surge headroom over the standard Max, for $200. Worth it only if you're running heavy loads.
Best for: Workshops and job sites where tool startup surge is the constraint.
Where it falls short:
- $200 premium is wasted if your loads are under 2400W
- 57 lb
Bluetti AC70
768Wh with 1000W output at $499 — it does what the EcoFlow River 2 Pro does, with more output and more weight.
Best for: Campers who need to run a small fridge, not just charge devices.
Where it falls short:
- 22 lb — 5 lb heavier than the River 2 Pro
- Not expandable
| Spec | EcoFlow DELTA 3 Max Plus | Bluetti AC70 |
|---|---|---|
| Price | $1299 | $499 |
| Capacity | 2048 Wh | 768 Wh |
| Continuous output | 3000 W | 1000 W |
| Surge output | 6000 W | 2000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 57.3 lb | 22 lb |
| Max solar | 1000 W | 500 W |
| Recharge time (faster wins) | 1h 22m | 1h 15m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Max Plus | Bluetti AC70 |
|---|---|---|
| Refrigerator | 29.0 hrs | 10.9 hrs |
| Mini fridge | 55.3 hrs | 20.7 hrs |
| Chest freezer | 21.8 hrs | 8.2 hrs |
| CPAP machine | 43.5 hrs | 16.3 hrs |
| Sump pump | 2.2 hrs | ❌ |