EcoFlow Delta Pro Ultra vs Anker Solix F3800: Which is Better?

Aug 12, 2025

Need a Portable Power Station that won’t leave you powerless when it matters? Short answer: EcoFlow Delta Pro Ultra wins for lifespan, Anker Solix F3800 for modular speed. But there’s more—surprises, specs, and quirks ahead that could flip your choice. Keep reading before you plug in.

Core Performance Specifications of EcoFlow Delta Pro Ultra vs Anker Solix F3800

Battery Capacity and Expandability

The EcoFlow Delta Pro Ultra uses LiFePO4 battery chemistry, offering enhanced safety, longer cycle life, and better thermal stability.
It can expand up to 90 kWh with additional batteries.

The Anker Solix F3800 has a large capacity with modular batteries, expandable to 122.4 kWh.
Its battery chemistry differs from LiFePO4, but offers strong performance for heavy users.

EcoFlow portable power station with dual battery modules on a white background.

Continuous Power Output and Surge Capacity

EcoFlow delivers 3,600 W continuous AC output with a 7,200 W surge capacity.
This makes it well suited for heavy-duty applications.

Anker offers slightly lower surge capacity at 5,000 W.
It still handles demanding appliances effectively.

AC and Solar Charging Speeds

EcoFlow supports up to 3,400 W AC input, charging from 0–80% in around 45 minutes.
It also supports up to 4,000 W solar input.

Anker charges from 0–80% in roughly 45 minutes with a 2,400 W AC input.
It supports up to 2,400 W solar charging.

Home Integration and Usability

Smart Home Panel and Automatic Transfer

EcoFlow integrates with smart home systems for automation and remote control.
It can be paired with EcoFlow’s Smart Home Panel for automatic switchover during outages.

Anker also supports smart home integration, offering flexible options for connecting to household systems.

240V Split-Phase Functionality

Both units can deliver 240 V split-phase power for larger appliances.
EcoFlow’s higher surge capacity makes it more capable for devices with high start-up loads.

Physical Dimensions and Portability

Both feature rugged designs and intuitive controls.
EcoFlow is slightly bulkier, focusing on maximum capacity.
Anker’s modular design can be easier to move in smaller sections.

EcoFlow portable power station with single battery module on a white background.

In-Depth Feature Comparison

Key Differentiators and User Experience

The ability to charge while outputting 240V

EcoFlow supports pass-through charging while delivering 240 V output.
This allows uninterrupted power to appliances.

Anker also offers dual-voltage operation, though with a different approach to simultaneous charging and output.

System design (all-in-one vs. separate inverter/battery)

EcoFlow’s design integrates the inverter and battery into a single, cohesive unit.
Expansion batteries connect seamlessly.

Anker’s modular approach allows the inverter and batteries to be configured separately.
This offers flexibility in system layout.

Power output stability under heavy load

EcoFlow’s inverter efficiency of up to 95% helps maintain stable output during prolonged use.

Anker’s efficiency is around 90%.
This is still solid but results in slightly higher energy loss over time.

Pricing and Value

Base unit cost

EcoFlow Delta Pro Ultra: around £3,499 with a 10-year warranty.

Anker Solix F3800: around £3,999 with a 5-year warranty.

Cost of accessories (e.g., smart panels, extra batteries)

EcoFlow’s expansion batteries and accessories include solar panels, mounts, and cables.

Anker’s accessories include modular batteries, additional solar panels, and carrying cases.

EcoFlow portable power station with dual battery modules and solar panels on a white background.

Which Power Station is Right for You?

Choose the EcoFlow Delta Pro Ultra If…

You need maximum power output and capacity

With 3,600 W continuous and 7,200 W surge, it handles high-demand appliances easily.

You require seamless 240V pass-through charging

Its ability to output full 240 V while charging makes it ideal for uninterrupted backup power.

Your primary use is as a whole-home backup system

The large expandability, LiFePO4 battery, and smart home integration make it well suited for long-term home use.

Choose the Anker Solix F3800 If…

You prioritise fast charging and a more portable form factor

Its modular design allows easier transport and setup, while still charging rapidly.

Your use case requires 120V/240V output at the same time

Dual-voltage capability supports diverse appliance types without reconfiguration.

You are looking for a potentially lower entry price point

While the base unit cost is slightly higher, certain configurations can be more cost-efficient for smaller setups.

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