EcoFlow DELTA 3 Ultra Plus vs Bluetti AC2A
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 AC2A costs $1800 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra Plus holds 1406% more energy (3072Wh vs 204Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra Plus has 6600W more surge headroom (7200W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC2A is 77.6 lb lighter (7.9 lb vs 85.5 lb).
- EcoFlow DELTA 3 Ultra Plus is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Ultra Plus
The Ultra's solar problem solved: same everything, but 1600W of PV input instead of 800W. That doubles your off-grid refill speed for $200.
Best for: Off-grid cabins and van builds that actually recharge from panels.
Where it falls short:
- $1999 approaches DELTA Pro 3 pricing
- 85.5 lb
Bluetti AC2A
One of the cheapest LiFePO4 stations on the market. 204Wh is tiny, but a 200W solar input that outpaces the capacity makes it a surprisingly capable little off-grid trickle unit.
Best for: Ultralight campers who recharge from a panel daily.
Where it falls short:
- 204Wh is genuinely small
- 300W output is device-only
| Spec | EcoFlow DELTA 3 Ultra Plus | Bluetti AC2A |
|---|---|---|
| Price | $1999 | $199 |
| Capacity | 3072 Wh | 204 Wh |
| Continuous output | 3600 W | 300 W |
| Surge output | 7200 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 85.5 lb | 7.9 lb |
| Max solar | 1600 W | 200 W |
| Recharge time (faster wins) | 1h 30m | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra Plus | Bluetti AC2A |
|---|---|---|
| Refrigerator | 43.5 hrs | ❌ |
| Mini fridge | 82.9 hrs | 5.5 hrs |
| Chest freezer | 32.6 hrs | ❌ |
| CPAP machine | 65.3 hrs | 4.3 hrs |
| Sump pump | 3.3 hrs | ❌ |