Bluetti AC500 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
EcoFlow DELTA 1300 costs $1000 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti AC500 holds 144% more energy (3072Wh vs 1260Wh), so it runs the same load proportionally longer.
- Bluetti AC500 has 6700W more surge headroom (10000W vs 3300W) — that decides whether a fridge, pump or AC compressor will actually start.
- EcoFlow DELTA 1300 is 35.2 lb lighter (30.9 lb vs 66.1 lb).
- Bluetti AC500 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Bluetti AC500 is rated for 3,500 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.
A modular home-backup system, not a portable unit — the AC500 has no internal battery at all until you add B300K packs.
Best for: Serious home-backup builds where you're designing a system, not buying an appliance.
Where it falls short:
- Requires separate battery packs to function at all — budget accordingly
- Total system cost climbs fast
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 AC500 | EcoFlow DELTA 1300 |
|---|---|---|
| Price | $1999 | $999 |
| Capacity | 3072 Wh | 1260 Wh |
| Continuous output | 5000 W | 1800 W |
| Surge output | 10000 W | 3300 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,500 | 800 |
| Weight (lighter wins) | 66.1 lb | 30.9 lb |
| Max solar | 3000 W | 400 W |
| Recharge time (faster wins) | 1h 45m | 1h 36m |
Runtime head-to-head
| Appliance | Bluetti AC500 | EcoFlow DELTA 1300 |
|---|---|---|
| Refrigerator | 43.5 hrs | 17.9 hrs |
| Mini fridge | 82.9 hrs | 34.0 hrs |
| Chest freezer | 32.6 hrs | 13.4 hrs |
| CPAP machine | 65.3 hrs | 26.8 hrs |
| Sump pump | 3.3 hrs | ❌ |