Best Overall · 1 of 5
EF ECOFLOW DELTA 3 Max Portable Power Station

- 2048Wh, 2400W, 3400W X-Boost
- 0 to 80% in 1.13 hours
- Under 10ms UPS, app control
Our take
The performance leader with the best app. Worth the money for demanding loads.
Why it made the shortlist
The EcoFlow DELTA 3 Max stores 2048Wh in a LiFePO4 pack with 2400W output and up to 3400W in X-Boost mode. It charges 0 to 80 percent in 1.13 hours through X-Stream technology, switches in under 10ms and offers smart app control to monitor use.
It states the highest boosted output of the five, 3400W, and the quickest stated 80 percent time. Its LiFePO4 pack is engineered for 10 years of daily use in a lighter build.
The app helps set priorities during an outage.
What works
- 3400W X-Boost for heavy appliances
- Fast 0 to 80 percent charge
- Under 10ms transfer time
- Built for 10 years of daily use
Watch out for
- Surge and cycle figures are not shown
- The catch
- X-Boost output works for resistive loads only.






