Skip to main content

EcoFlow Delta Pro 3 vs Anker SOLIX F3800: Which Is Best?

Last updated:

Fact-checked by Sarah Chen, NABCEP Certified Solar Installer, 10 years residential battery system experience.

Key Takeaways

  • The Anker SOLIX F3800 has higher output (6,000W vs 4,000W) and a built-in NEMA 14-50R outlet.
  • The EcoFlow Delta Pro 3 has more capacity (4,096Wh vs 3,840Wh) and greater expansion (48kWh vs 26.9kWh).
  • Both use LiFePO4 batteries with 5-year warranties and near-silent indoor operation.
  • The Anker has a faster UPS switchover (20ms vs unspecified on the EcoFlow).
  • Choose EcoFlow for maximum expansion; choose Anker for maximum output and built-in high-power outlets.

The Short Answer

The Anker SOLIX F3800 wins on raw output (6,000W vs 4,000W) and includes a built-in NEMA 14-50R outlet for EV and RV hookup. The EcoFlow Delta Pro 3 wins on capacity (4,096Wh vs 3,840Wh) and expansion potential (48kWh vs 26.9kWh). Both are premium LiFePO4 power stations with 5-year warranties. Choose Anker for maximum power and outlet flexibility; choose EcoFlow for the largest expansion ecosystem.

Side-by-Side Specs

Specification comparison: EcoFlow Delta Pro 3 vs Anker SOLIX F3800
Spec EcoFlow Delta Pro 3 Anker SOLIX F3800
Running Watts 4,000W 6,000W
Starting Watts 8,000W 9,000W
Battery Capacity 4,096Wh 3,840Wh
Fuel Type battery, solar battery, solar
Noise Near-silent Near-silent
Runtime — —
Weight 113.5 lb 132.3 lb
Outlets AC, L14-30R, USB-C, 12V NEMA 14-50R, L14-30R, AC, USB-C, 12V
CO Sensor Unconfirmed Unconfirmed
Transfer-Switch Ready Yes Yes
CARB Compliant Yes Yes
Warranty 5 years 5 years
Price $2,500–$3,500 $2,500–$4,000

Choose the EcoFlow Delta Pro 3

Choose the EcoFlow Delta Pro 3 if you want maximum expansion capacity (up to 48kWh) and native 120/240V split-phase output for whole-panel integration. Its 4,096Wh capacity and 2,600W solar input make it the best choice for scalable whole-home backup.

Check EcoFlow Price

Choose the Anker SOLIX F3800

Choose the Anker SOLIX F3800 if you want the highest output (6,000W continuous, 9,000W surge) and built-in NEMA 14-50R and L14-30R outlets for direct EV, RV, and transfer-switch connection. Its sub-20ms UPS switchover makes it the best turnkey home backup option.

Check Anker Price

EcoFlow Delta Pro 3 Pros & Cons

Pros

  • 4,096Wh LiFePO4 battery with 4,000-cycle lifespan
  • Native 120/240V split-phase output for direct panel integration
  • 4,000W continuous (6,000W X-Boost) with near-silent operation
  • Expandable to 48kWh; 2,600W solar input for off-grid recharging

Cons

  • 113.5 lb — heavy for a "portable" unit
  • Full home-panel integration requires additional transfer-switch hardware

Anker SOLIX F3800 Pros & Cons

Pros

  • 6,000W continuous / 9,000W surge — highest output in its class
  • Built-in NEMA 14-50R and L14-30R for EV, RV, and transfer-switch hookup
  • Sub-20ms UPS switchover for seamless backup; 2,400W solar input
  • Expandable to 26.9kWh (53.8kWh dual); 5-year warranty

Cons

  • 132.3 lb — effectively a fixed installation despite wheels
  • 3,000 cycles is fewer than the Delta Pro 3's 4,000

Frequently Asked Questions

Which has more capacity: EcoFlow Delta Pro 3 or Anker SOLIX F3800?
The EcoFlow Delta Pro 3 has 4,096Wh vs the Anker SOLIX F3800 at 3,840Wh — a 6.7% advantage. The EcoFlow also expands to 48kWh vs the Anker at 26.9kWh, making it the better choice for large-scale expansion.
Which has higher output: EcoFlow Delta Pro 3 or Anker SOLIX F3800?
The Anker SOLIX F3800 has 6,000W continuous (9,000W surge) vs the EcoFlow Delta Pro 3 at 4,000W continuous (6,000W with X-Boost, 8,000W surge). The Anker wins by 50% on continuous output.
Which has better outlets for home backup?
The Anker SOLIX F3800 includes both NEMA 14-50R and L14-30R outlets natively, covering EV, RV, and transfer-switch hookup. The EcoFlow Delta Pro 3 has L14-30R but no NEMA 14-50R. The Anker is more versatile for direct high-power connections.
Which solar generator lasts longer?
The EcoFlow Delta Pro 3 has 4,000 charge cycles vs the Anker SOLIX F3800 at 3,000 cycles. At one cycle per day, EcoFlow lasts approximately 11 years and Anker lasts approximately 8 years. Both come with 5-year warranties.
Can either of these run a whole house?
Neither can run a whole house including central AC on battery alone, but both can power essential circuits (refrigerator, lights, furnace blower, outlets) for 8 to 24 hours. The EcoFlow with its 48kWh expansion ecosystem comes closest to whole-home coverage.

Affiliate disclosure: We earn commissions from qualifying purchases made through links on this page, at no extra cost to you. Our recommendations are based on independent research and testing. Read full disclosure.