Bluetti AC70 vs EcoFlow DELTA 1300
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 $500 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 1300 holds 64% more energy (1260Wh vs 768Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 1300 has 1300W more surge headroom (3300W vs 2000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC70 is 8.9 lb lighter (22 lb vs 30.9 lb).
- Bluetti AC70 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Bluetti AC70 is rated for 3,000 cycles vs 800 — meaningful if you cycle it daily.
If you plan to cycle the battery daily, think twice about the EcoFlow DELTA 1300. Its NMC cells are rated for 800 cycles against the LiFePO4 rival's longer life — over years of regular use that's the more expensive unit, whatever the sticker says.
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
The original DELTA that put EcoFlow on the map. Fast-charging and high-surge for its day, but the NMC battery and lack of USB-C now show its age.
Best for: Bargain hunters who find it heavily discounted.
Where it falls short:
- NMC — ~800 cycles
- No USB-C PD
- 2-year warranty
| Spec | Bluetti AC70 | EcoFlow DELTA 1300 |
|---|---|---|
| Price | $499 | $999 |
| Capacity | 768 Wh | 1260 Wh |
| Continuous output | 1000 W | 1800 W |
| Surge output | 2000 W | 3300 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 22 lb | 30.9 lb |
| Max solar | 500 W | 400 W |
| Recharge time (faster wins) | 1h 15m | 1h 36m |
Runtime head-to-head
| Appliance | Bluetti AC70 | EcoFlow DELTA 1300 |
|---|---|---|
| Refrigerator | 10.9 hrs | 17.9 hrs |
| Mini fridge | 20.7 hrs | 34.0 hrs |
| Chest freezer | 8.2 hrs | 13.4 hrs |
| CPAP machine | 16.3 hrs | 26.8 hrs |
| Sump pump | ❌ | ❌ |