EcoFlow
EcoFlow Delta Pro
Portable power station · 2022
90
/ 100
From $3,299
VS
Corsair
Corsair RM850x Shift
850 W · Gold
90
/ 100
From $179
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, EcoFlow Delta Pro lands at 90 and Corsair RM850x Shift at 90. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick EcoFlow Delta Pro if…
- ✓LiFePO4 chemistry on modern SKUs (4000+ cycles)
- ✓Solar input
- ✓Multiple AC/DC/USB-C outputs
Pick Corsair RM850x Shift if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
EcoFlow Delta Pro 90
vs 90 Corsair RM850x Shift
Score breakdown
EcoFlow Delta Pro
90 efficiency 85
noise 86
cables 90
value 80
Corsair RM850x Shift
90 efficiency 90
noise 86
cables 86
value 84
Specs side-by-side
| Spec | EcoFlow Delta Pro | Corsair RM850x Shift |
|---|---|---|
| Type | Portable power station | — |
| Release year | 2022 | — |
| Wattage | — | 850 W |
| Efficiency | — | Gold |
EcoFlow Delta Pro
Pros
- +LiFePO4 chemistry on modern SKUs (4000+ cycles)
- +Solar input
- +Multiple AC/DC/USB-C outputs
Cons
- −Heavy
- −Pricey per Wh
- −Shipping restrictions (Li-ion)
Corsair RM850x Shift
Pros
- +Modular cabling on most
- +ATX 3.1 / 12V-2x6 support
- +10-year warranty on many
Cons
- −Bulky on higher wattages
- −Fan noise varies by load
- −Cable length may not fit some cases
FAQ: EcoFlow Delta Pro vs Corsair RM850x Shift
Which is better, EcoFlow Delta Pro or Corsair RM850x Shift? +
Both score 90 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is EcoFlow Delta Pro worth the price? +
At $3,299, EcoFlow Delta Pro delivers a Specdex score of 90 — strongest in cables.
Is Corsair RM850x Shift worth the price? +
At $179, Corsair RM850x Shift delivers a Specdex score of 90 — strongest in efficiency.
Does EcoFlow Delta Pro or Corsair RM850x Shift last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.