Bluetti AC2A vs EcoFlow DELTA mini
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 $400 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA mini holds 332% more energy (882Wh vs 204Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA mini has 1500W more surge headroom (2100W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Bluetti AC2A is 15.7 lb lighter (7.9 lb vs 23.6 lb).
- Bluetti AC2A uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Bluetti AC2A 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 mini. 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.
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
A compact NMC unit with a surprisingly strong 1,400W output for its size — but the 800-cycle battery means it won't age like the LiFePO4 field.
Best for: Buyers who want strong output in a light unit and won’t cycle it daily.
Where it falls short:
- NMC — ~800 cycles
- 2-year warranty, 300W solar input
| Spec | Bluetti AC2A | EcoFlow DELTA mini |
|---|---|---|
| Price | $199 | $599 |
| Capacity | 204 Wh | 882 Wh |
| Continuous output | 300 W | 1400 W |
| Surge output | 600 W | 2100 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 7.9 lb | 23.6 lb |
| Max solar | 200 W | 300 W |
| Recharge time (faster wins) | 1h 30m | 1h 36m |
Runtime head-to-head
| Appliance | Bluetti AC2A | EcoFlow DELTA mini |
|---|---|---|
| Refrigerator | ❌ | 12.5 hrs |
| Mini fridge | 5.5 hrs | 23.8 hrs |
| Chest freezer | ❌ | 9.4 hrs |
| CPAP machine | 4.3 hrs | 18.7 hrs |
| Sump pump | ❌ | ❌ |