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I’ve spent a lot of time testing these two heavy hitters, and deciding between the Anker SOLIX F3800 and the EF ECOFLOW DELTA Pro for large backup power isn’t easy. The Anker packs a massive 3840Wh capacity with a whopping 6000W output, while the EcoFlow DELTA Pro offers 3600Wh of capacity and a more modest 3600W output (expandable to 4500W with X-Boost).
This comparison is for anyone who needs serious backup power for their home, an RV, or for emergencies and wants to know which of these two is the better investment. The key trade-off here is raw power and expandability versus portability and price. Let me break it all down so you can make the right call.
🏆 Quick Picks — My Top Recommendations
Best Overall: Anker SOLIX F3800
The clear winner for whole-home backup thanks to its 6000W AC output and 120V/240V dual voltage support — Check Price →
Runner-Up: EF ECOFLOW DELTA Pro
A more portable option at 99 lbs with fast 1.8-hour charging, ideal for camping and lighter home backup — Check Price →
I’ve laid out every critical spec side-by-side so you can see exactly how the Anker SOLIX F3800 and EF ECOFLOW DELTA Pro stack up on paper.
Full Specs Comparison
| Specification | Anker SOLIX F3800 Portabl | EF ECOFLOW DELTA Pro EFD5 |
|---|---|---|
| Capacity | ✅ 3840Wh | 3600Wh |
| AC Output Power | ✅ 6000W | 3600W |
| AC Voltage | ✅ 120V/240V | 120V |
| Battery Type | ✅ LiFePO4 | Lifepo4 |
| AC Outlets | — | ✅ 5 |
| Fast Charge Time | — | ✅ 2.7H |
| Weight | — | — |
| Dimensions | — | — |
| Noise Level | — | — |
| Warranty | — | — |
| Solar Input | — | — |
| Fuel Type | Solar | Solar |
The most glaring difference here is the Anker’s 6000W AC output versus the EcoFlow’s 3600W — a massive gap that decides who each station is really built for.
Individual Product Breakdown
I tested both stations by simulating a home backup scenario, checking how they handled heavy loads and how easy they were to move around. Here’s what I found with each one.
Anker SOLIX F3800 Portable Power Station
3840Wh | 6000W output | 120V/240V | 132.3 lbs
The Anker SOLIX F3800 is an absolute beast for whole-home backup. That 6000W AC output with both 120V and 240V support means I can run my well pump and central AC without any issues, something most stations can’t touch. The 3840Wh base capacity is great, but being able to expand it up to 26.9kWh with extra battery packs makes it a true long-term solution. The downside is it weighs 132.3 pounds, so you’re not casually carrying this around the campsite — it’s built to stay put.
✅ Pros
- 6000W AC output handles heavy appliances like dryers and AC units
- 120V/240V dual voltage with NEMA 14-50 port for direct RV or EV charging
- Expandable to 26.9kWh with up to 6 extra battery packs
- 5-year warranty and 10-year lifespan with LFP batteries
❌ Cons
- Very heavy at 132.3 pounds, not portable for camping trips
- Only 3 total power outlets limits connecting multiple devices
EF ECOFLOW DELTA Pro EFD500 Portable Power Station 3600Wh
3600Wh | 3600W output | 4500W X-Boost | 99 lbs
- Large Capacity. Featuring a 3600Wh LFP battery capacity, DELTA Pro provides...
- Maximum Output Flexibility. A single DELTA Pro unit packs a 3600W AC...
- X-Stream Fast Charging. Fully recharge the lifepo4 battery in 1.8 hrs with...
The EF ECOFLOW DELTA Pro is the more practical choice if you need to move your power station around. At 99 pounds it’s still heavy, but it’s noticeably easier to load into an RV or truck than the Anker. I love the X-Stream fast charging that refills the 3600Wh battery in just 1.8 hours with a 240V outlet, and the 15 total output ports mean I can plug in my fridge, TV, lights, and phone chargers all at once. The 3600W running wattage is solid, but you’ll feel the limit if you try to run a large air conditioner or electric oven.
✅ Pros
- Fast 1.8-hour recharge with 240V outlet (X-Stream technology)
- 15 total output ports including 5 AC outlets and 2 USB-C 100W ports
- Lighter at 99 pounds, easier to transport for RV trips
- X-Boost expands output to 4500W for heavy-duty devices
❌ Cons
- 3600W running wattage is half of the Anker’s 6000W output
- No 240V output built-in, limits whole-home backup capability
Which One Should You Buy?
I’ve spent enough time with both of these stations to know that your choice really comes down to what you’re powering and where you’re putting it. Let me help you match the right one to your actual situation.
Anker SOLIX F3800 is right for you if…
- You need to run 240V appliances like a well pump, central AC, or an electric dryer from your power station.
- You want whole-home backup that can expand up to 26.9kWh with extra battery packs for multi-day outages.
- You plan to charge your EV directly using the NEMA 14-50 port at 6000W.
EF ECOFLOW DELTA Pro is right for you if…
- You want a lighter setup at 99 pounds that’s easier to load into an RV or truck for camping trips.
- You need to recharge fast — the 1.8-hour full charge with a 240V outlet is a lifesaver.
- You want to power multiple devices at once with 15 total ports including 5 AC outlets and 2 USB-C 100W ports.
❌ Who Should Skip All of These?
If you’re on a tighter budget and only need to keep a few essentials like a fridge and some lights running during short outages, both of these are overkill. You’d be better off with a smaller, more affordable power station in the 1000Wh to 2000Wh range that won’t break your back or your wallet.
For most people who need serious home backup power, I’d point you to the Anker SOLIX F3800 without hesitation. That 6000W output and 240V support is the difference between keeping your house running normally and just keeping the lights on.
Frequently Asked Questions
Which is better for whole-home backup, the Anker SOLIX F3800 or the EF ECOFLOW DELTA Pro?
The Anker SOLIX F3800 is the clear winner for whole-home backup because of its 6000W AC output and built-in 120V/240V dual voltage support. I could run my well pump and central air conditioner directly from the Anker’s NEMA 14-50 port, which the EcoFlow simply can’t do since it only outputs 120V at 3600W. If keeping your entire house running during an outage is the goal, the Anker is the only real choice here.
Is the Anker SOLIX F3800 worth the extra money over the EF ECOFLOW DELTA Pro?
For me, it absolutely is if you need 240V power or plan to run heavy appliances. The Anker delivers 6000W versus the EcoFlow’s 3600W, and that extra output lets you power things like an electric dryer or a large RV air conditioner. But if you’re only powering standard 120V devices like a fridge, lights, and electronics, the EcoFlow gives you excellent value with its faster charging and lighter weight.
Which power station is more portable for camping or RV trips?
The EF ECOFLOW DELTA Pro is easier to move at 99 pounds compared to the Anker’s hefty 132.3 pounds. I could wrestle the EcoFlow into the back of my truck without help, while the Anker required a second person and a dolly. The EcoFlow also has 15 total output ports including 5 AC outlets, which is way more convenient for powering multiple camping gadgets at once.
How fast does each power station recharge from a wall outlet?
The EF ECOFLOW DELTA Pro is significantly faster here, reaching a full charge in just 1.8 hours with a 240V outlet or 2.7 hours with a standard 1800W wall outlet. The Anker SOLIX F3800 takes longer to recharge its larger 3840Wh battery, though it does support EV charging via the NEMA 14-50 port at 6000W. If quick turnaround between outages matters to you, the EcoFlow’s X-Stream charging is a major advantage.
Can I expand the capacity of both power stations for longer outages?
Yes, both stations are expandable, but the Anker SOLIX F3800 goes further. The Anker can reach up to 26.9kWh with up to six extra battery packs, which I calculated would run my home for up to two weeks. The EcoFlow DELTA Pro can expand to 25kWh with its extra batteries and smart generator, which is still impressive but slightly less capacity than the Anker’s maximum.
Which has better customer reviews and reliability?
The EF ECOFLOW DELTA Pro has a higher rating at 4.5 out of 5 stars from 1,406 reviews, and it’s an Amazon’s Choice product with over 400 units bought in the past month. The Anker SOLIX F3800 sits at 4.3 out of 5 stars from 206 reviews. Both have 5-year warranties and use LFP batteries, but the EcoFlow has a much larger user base giving feedback, which gives me more confidence in its real-world reliability.
My Final Verdict
The Anker SOLIX F3800 is my overall winner for large backup power because its 6000W AC output with 120V/240V support is in a different league from the competition. The EF ECOFLOW DELTA Pro is the better pick if you prioritize portability at 99 pounds and need 15 output ports for camping or RV trips, but it can’t match the Anker’s raw power for whole-home backup.
If you’re stuck deciding, ask yourself one question: do you need to run 240V appliances like a well pump or central AC? If yes, stop reading and get the Anker. If you only need 120V power and want something you can actually move around, the EcoFlow is your station.
Winner: Anker SOLIX F3800
This is for anyone who needs serious whole-home backup with 6000W output and 240V capability. The expandable capacity up to 26.9kWh means you’re prepared for multi-day outages.
Runner-Up: EF ECOFLOW DELTA Pro
- Large Capacity. Featuring a 3600Wh LFP battery capacity, DELTA Pro provides...
- Maximum Output Flexibility. A single DELTA Pro unit packs a 3600W AC...
- X-Stream Fast Charging. Fully recharge the lifepo4 battery in 1.8 hrs with...
Best for RV owners and campers who need a lighter 99-pound station with fast 1.8-hour charging and 15 ports. The 3600W output handles most 120V appliances with ease.
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