Anker 535 PowerHouse vs EcoFlow DELTA Max 2000
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
Anker 535 PowerHouse costs $670 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Max 2000 holds 294% more energy (2016Wh vs 512Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Max 2000 has 2650W more surge headroom (3400W vs 750W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker 535 PowerHouse is 31.3 lb lighter (16.7 lb vs 48 lb).
- Anker 535 PowerHouse uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Anker 535 PowerHouse 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 Max 2000. 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 durable half-kWh unit for devices and light loads. Dependable, but the low output and slow charging make it a device-first companion.
Best for: Campers charging phones, laptops and lights, not appliances.
Where it falls short:
- 500W output is device-scale
- 120W solar input, slow recharge
The previous-generation 2kWh EcoFlow. Still capable and expandable, but its NMC cells and 800-cycle rating are a real step below the LiFePO4 DELTA 3 that replaced it.
Best for: Only at a steep discount against the DELTA 3 Max.
Where it falls short:
- NMC — roughly 800 cycles vs 4,000 for the DELTA 3 Max
- 2-year warranty
| Spec | Anker 535 PowerHouse | EcoFlow DELTA Max 2000 |
|---|---|---|
| Price | $429 | $1099 |
| Capacity | 512 Wh | 2016 Wh |
| Continuous output | 500 W | 2400 W |
| Surge output | 750 W | 3400 W |
| Battery | LiFePO4 | NMC |
| Rated cycles | 3,000 | 800 |
| Weight (lighter wins) | 16.7 lb | 48 lb |
| Max solar | 120 W | 800 W |
| Recharge time (faster wins) | 2h 30m | 1h 48m |
Runtime head-to-head
| Appliance | Anker 535 PowerHouse | EcoFlow DELTA Max 2000 |
|---|---|---|
| Refrigerator | ❌ | 28.6 hrs |
| Mini fridge | 13.8 hrs | 54.4 hrs |
| Chest freezer | ❌ | 21.4 hrs |
| CPAP machine | 10.9 hrs | 42.8 hrs |
| Sump pump | ❌ | 2.1 hrs |