Anker SOLIX C300 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
Anker SOLIX C300 costs $420 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA mini holds 206% more energy (882Wh vs 288Wh), 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.
- Anker SOLIX C300 is 15.0 lb lighter (8.6 lb vs 23.6 lb).
- Anker SOLIX C300 uses LiFePO4 while the other uses NMC — roughly double the usable cycle life.
- Anker SOLIX C300 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.
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
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 | Anker SOLIX C300 | EcoFlow DELTA mini |
|---|---|---|
| Price | $179 | $599 |
| Capacity | 288 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) | 8.6 lb | 23.6 lb |
| Max solar | 100 W | 300 W |
| Recharge time (faster wins) | 1h | 1h 36m |
Runtime head-to-head
| Appliance | Anker SOLIX C300 | EcoFlow DELTA mini |
|---|---|---|
| Refrigerator | ❌ | 12.5 hrs |
| Mini fridge | 7.8 hrs | 23.8 hrs |
| Chest freezer | ❌ | 9.4 hrs |
| CPAP machine | 6.1 hrs | 18.7 hrs |
| Sump pump | ❌ | ❌ |