EcoFlow DELTA 3 Ultra vs Bluetti EB3A
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 EB3A costs $1560 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 3 Ultra holds 1046% more energy (3072Wh vs 268Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 3 Ultra has 6000W more surge headroom (7200W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti EB3A is 73.7 lb lighter (10.1 lb vs 83.8 lb).
- EcoFlow DELTA 3 Ultra is rated for 4,000 cycles vs 2,500 — meaningful if you cycle it daily.
EcoFlow DELTA 3 Ultra
3kWh with 7200W surge at $1799 — this is whole-home territory at a mid-range price. The catch is the 800W solar input.
Best for: Grid-tied home backup where you recharge from the wall, not the sun.
Where it falls short:
- 800W solar input is low for 3kWh — slow off-grid refills
- 83.8 lb
Bluetti EB3A
The budget veteran. 268Wh at $239 with a 30-minute recharge — still one of the fastest-charging small units you can buy.
Best for: Budget campers who value fast top-ups between trips.
Where it falls short:
- 2500 cycles is the lowest here
- 268Wh empties fast under real load
| Spec | EcoFlow DELTA 3 Ultra | Bluetti EB3A |
|---|---|---|
| Price | $1799 | $239 |
| Capacity | 3072 Wh | 268 Wh |
| Continuous output | 3600 W | 600 W |
| Surge output | 7200 W | 1200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 2,500 |
| Weight (lighter wins) | 83.8 lb | 10.1 lb |
| Max solar | 800 W | 200 W |
| Recharge time (faster wins) | 1h 30m | 30 min |
Runtime head-to-head
| Appliance | EcoFlow DELTA 3 Ultra | Bluetti EB3A |
|---|---|---|
| Refrigerator | 43.5 hrs | 3.8 hrs |
| Mini fridge | 82.9 hrs | 7.2 hrs |
| Chest freezer | 32.6 hrs | 2.8 hrs |
| CPAP machine | 65.3 hrs | 5.7 hrs |
| Sump pump | 3.3 hrs | ❌ |