EcoFlow DELTA 2 vs Anker SOLIX C300
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 SOLIX C300 costs $720 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA 2 holds 256% more energy (1024Wh vs 288Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA 2 has 1600W more surge headroom (2200W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker SOLIX C300 is 18.4 lb lighter (8.6 lb vs 27 lb).
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
The value pick in the 1kWh class. Cheaper than the Anker C1000 with nearly identical capacity — but check the surge number before you buy.
Best for: Budget-conscious buyers running electronics and a fridge, with no motor-driven loads.
Where it falls short:
- X-Boost tops out at 2200W — the least surge headroom of any 1kWh unit we list
- 80-minute recharge is slower than Anker's 58
Anker's smallest. 288Wh at $179 with three USB-C ports — aimed squarely at people charging modern devices, not running appliances.
Best for: Content creators and travelers with a bag full of USB-C gear.
Where it falls short:
- 300W output is device-only territory
- 100W solar input
| Spec | EcoFlow DELTA 2 | Anker SOLIX C300 |
|---|---|---|
| Price | $899 | $179 |
| Capacity | 1024 Wh | 288 Wh |
| Continuous output | 1800 W | 300 W |
| Surge output | 2200 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 27 lb | 8.6 lb |
| Max solar | 500 W | 100 W |
| Recharge time (faster wins) | 1h 20m | 1h |
Runtime head-to-head
| Appliance | EcoFlow DELTA 2 | Anker SOLIX C300 |
|---|---|---|
| Refrigerator | 14.5 hrs | ❌ |
| Mini fridge | 27.6 hrs | 7.8 hrs |
| Chest freezer | 10.9 hrs | ❌ |
| CPAP machine | 21.8 hrs | 6.1 hrs |
| Sump pump | ❌ | ❌ |