EcoFlow Delta Pro Review – Is This the Best 3000W+ Solar Generator on the Market?

After nearly a full year of real-world use, I’m finally ready to share my complete review of the EcoFlow Delta Pro—a powerhouse solar generator that’s become the heart of my off-grid energy setup. Whether I was powering my RV, running a small cabin, or navigating outages at home, this unit delivered serious, reliable performance.

Quick Overview: EcoFlow Delta Pro

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• Weight: 99 lbs
  
• Dimensions: 25 x 11.2 x 16.4 in
  
• Rated Output: 3600W continuous, 7200W surge
  
• Expandable Capacity: 3600Wh base; up to 25kWh with additional batteries
  
• Battery Type: LiFePO4
  
• Efficiency: 93.4% inverter efficiency
  
• Life Cycles: 6500 cycles at 50%, 3500 at 80%
  
• Ports:
  
  • 2× USB-A fast charge
    
  • 2× regular USB-A
    
  • 2× USB-C 100W
    
  • 5× AC outlets (20A)
    
  • Car outlet, Anderson port, remote control port
    
• Charging Options: AC wall, solar, EV station, car adapter, dual AC + solar combo
  

Real-World Experience: Why Delta Pro Is Worth It

When I first purchased the EcoFlow Delta Pro 11 months ago, I expected a solid power station. What I didn’t expect was to eventually rely on three Delta Pros to support 70% of my mountain cabin’s energy needs. This isn’t just a solar generator—it’s a full-blown off-grid energy solution.

Whether you’re charging phones, running power tools, or supporting essential home appliances, the Delta Pro performs without compromise. It can even power 240V systems when two units are linked together.

And thanks to the remote control accessory, I could easily monitor battery stats and power usage while on the move—especially useful during RV trips.

App Experience: Smart Control at Your Fingertips

EcoFlow’s companion app has seen major upgrades. Accessible via QR code in the manual, the app lets you monitor:

• Input/output wattage
  
• Battery health and status
  
• Individual 12V and USB outputs
  
• And more through a customizable dashboard
  

Spend some time exploring the settings—you’ll appreciate how in-depth the control and data monitoring are.

Design and Portability

Considering its 3.6kWh capacity, the 99-pound weight is acceptable—especially with the built-in retractable handle and rugged wheels. Its upright tower-like design is compact enough to tuck into an RV or truck bed without eating up too much space.

The 5-inch LCD display automatically adjusts brightness based on ambient light and provides real-time info on battery, output, and charging status.

Expansion Batteries: Seamless Integration

EcoFlow nailed it with their expansion battery design. Simply plug into the back ports—no complicated syncing needed. Once connected, all batteries charge and discharge together. And since they use the same LiFePO4 chemistry, performance remains consistent.

In my setup, I connected two expansion batteries to each Delta Pro, achieving a total capacity of 10.8kWh per system.

Ports & Outlets

Port Type	Details
2× USB-A (fast)	5V/2.4A, 9V/2A, 12V/1.5A (18W max)
2× USB-A (standard)	5V/2.4A (15W max)
2× USB-C (100W)	5–20V at 5A
5× AC Outlets	3600W total, 7200W surge
Solar Charging	11–150V, 15A, up to 1600W
Anderson Port	12/24V, 8A
Car Port	12.6V, 10A (126W max)
AC Input	120V/15A (1800W), 240V/12.5A (3000W)

Charging Methods

1. Solar Charging

With support for up to 1600W solar input, Delta Pro can fully recharge in under 7 hours (with ideal conditions and multiple panels). Connect expansion batteries and they all charge in sync.

2. Wall Charging (AC)

Using EcoFlow’s X-Stream fast charging, the EcoFlow Delta Pro draws 1800W from a standard wall outlet, reaching 100% in under 3 hours.

Here are my real charging times (0 to 100%):

• 2.7 hours
  
• 2.7 hours
  
• 2.65 hours
  
• 2.7 hours
  

You can also lower the input to 400W with a toggle switch to avoid tripping breakers.

3. EV Station Charging

One of my favorite features: the Infinity AC Port lets you charge from an EV station. I tested this with EcoFlow’s adapter and achieved around 2315W input, topping off the unit incredibly fast.

What Can It Run?

Here’s a sample of what the Delta Pro handled in my testing:

Appliance	Peak (W)	Running (W)
Refrigerator	1200	200
Microwave	1000	1000
Coffee Maker	600	600
Computer	250	250
Sump Pump	1500	800
Well Pump	2000	1000
Power Tools (saw, drill)	1400–2500	600–1500
Dryer (with 2 units + hub)	5000	5000

Anything drawing under 3600W continuous / 7200W surge is fair game.

For 240V appliances, just connect two Delta Pros with the Double Voltage AC Hub. I successfully powered a well pump and a 5000W dryer with this configuration.

Load Testing

Here are the actual load numbers I recorded:

• Test 1: 3621W
  
• Test 2: 3610W
  
• Test 3: 3615W
  
• Test 4: 3603W
  

These numbers closely match EcoFlow’s claims—no surprises or dips in output.

Minor Drawbacks

No product is perfect, and here’s what I’d improve:

• Heavy: Though manageable, 99 lbs is still a lot if you’re solo.
  
• Vent Placement: The top vents blow hot air directly onto nearby battery packs. Stacking options or better airflow design would help.
  
• EV Charging Limitation: You can’t charge your electric vehicle using the double-voltage hub—only from an EV station directly.
  

Should You Buy It?

If you’re serious about off-grid living, emergency preparedness, or heavy-duty backup power, the EcoFlow Delta Pro is worth every penny. With a base capacity of 3600Wh and the ability to scale up to 25kWh, this is one of the most powerful and efficient solar generators on the market.

✅ What I Loved

• Massive expandable capacity
  
• 93.4% inverter efficiency
  
• Clean 240V output (with two units)
  
• Tons of ports
  
• App control and remote monitor
  
• Fast solar + wall + EV charging
  

❌ What Could Be Better

• Heavy and large
  
• Heat management near expansion batteries
  
• No EV charging via double-voltage hub
  

Bottom Line: The EcoFlow Delta Pro is not just a solar generator—it’s a complete energy solution. Whether you’re powering a cabin, prepping for outages, or running demanding tools, this unit won’t let you down.