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ALLPOWERS R4000 vs EcoFlow DELTA Pro 3 is a classic value-versus-platform showdown for home backup power. Both are big LiFePO4 power stations on wheels with roughly 3.5 to 4kWh of storage, but the R4000 is a 120V workhorse that often sells for far less, while the DELTA Pro 3 adds 240V output, battery expansion and whole-home panel integration. We compared specs, expert testing and owner reviews to show where each one makes sense.
Part of our Home Comfort, Backup Power & Tool Guides.
The short answer
Buy the ALLPOWERS R4000 if you want the most battery for the money to run a fridge, freezer, internet, lights and 120V tools or an RV through outages, and you don’t need 240V or expansion. Buy the EcoFlow DELTA Pro 3 if you want to power 240V appliances like a well pump, connect to a home panel, or grow your system later. Our overall pick for serious home backup is the DELTA Pro 3; the R4000 is the value pick.
Check price: EcoFlow DELTA Pro 3 →
Side-by-side specs
| Spec | ALLPOWERS R4000 | EcoFlow DELTA Pro 3 |
|---|---|---|
| Capacity | 3,456Wh | 4,096Wh (marketed as 4kWh) |
| Battery | LiFePO4, 3,500+ cycles to 80% | LFP, 4,000 cycles to 80% |
| AC output | 3,600W rated inverter (marketed as 4,000W), 6,000W peak | 4,000W continuous; 6,000W with X-Boost |
| Voltage | 100 to 120V only | 120V and 240V |
| Expandable | No expansion listed | Yes, with extra batteries (EcoFlow advertises multi-battery setups up to 48kWh) |
| AC charging | Up to 2,000W input; ALLPOWERS claims about 2 hours to full | EcoFlow claims 0 to 80% in about 50 minutes |
| Solar input | Up to 2,000W MPPT | Up to 2,600W across two inputs (1,600W high-voltage + 1,000W low-voltage) |
| Backup switchover | UPS function (switch time not published) | 10ms UPS; auto switchover with Smart Home Panel 2 |
| Outlets | Four 120V AC outlets, USB-C, USB-A, 12V and a 30A RV port | 120V outlets plus 240V and RV-style outlets, USB-A and USB-C |
| App | Wi-Fi and Bluetooth | Wi-Fi app with scheduling and energy dashboard |
| Weight | About 99 lb | About 113 lb |
| Warranty | 5 years | 5 years (3 standard + 2 extended with app registration) |
| Price range* | Value tier (under $2,000) on sale; list price higher | Mid tier ($2,000 to $3,000) on sale; premium at list |
*Price tiers: Value = under $2,000, Mid = $2,000 to $3,000, Premium = over $3,000. Power station prices swing a lot during sales, so check today’s price.
Capacity and battery life
The DELTA Pro 3 holds about 4.1kWh versus the R4000’s roughly 3.5kWh, so it runs the same loads about 18 percent longer on a full charge. Both use long-life lithium iron phosphate cells; EcoFlow rates its pack for 4,000 cycles and ALLPOWERS for more than 3,500, both to 80 percent capacity, which is years of daily use either way. One independent long-term review measured the R4000’s usable output a bit below its rating, which is normal for power stations because of inverter losses.
Winner: EcoFlow DELTA Pro 3, for more capacity and a slightly higher cycle rating.
Output and 240V support
This is the biggest practical difference. The R4000 is a 120V-only unit. Its inverter is rated at 3,600W with a 6,000W peak, enough for a refrigerator, sump pump, microwave or most 120V power tools, though ALLPOWERS markets it as 4,000W, so plan around the lower figure. The DELTA Pro 3 delivers 4,000W continuous and can output 120V or 240V, which lets it run 240V loads such as a well pump, some HVAC equipment or a dryer circuit through a proper transfer setup. If your home needs 240V in an outage, the choice is made for you.
Winner: EcoFlow DELTA Pro 3.
Charging and solar
Both recharge quickly from the wall. ALLPOWERS lists up to 2,000W of AC input and says the R4000 fills in about two hours; EcoFlow says the DELTA Pro 3 can reach 80 percent in about 50 minutes. For solar, the R4000 accepts up to 2,000W, while the DELTA Pro 3 has two separate inputs totaling 2,600W, including a high-voltage port that suits long panel strings. One reviewer saw slower real-world solar charging on the R4000 than its rating suggests, so size your array with some headroom.
Winner: EcoFlow DELTA Pro 3, for higher solar capacity and dual inputs.
Home backup and expansion
The DELTA Pro 3 is built as a home energy platform. It supports extra batteries for multi-day backup, offers a 10ms UPS switchover, and pairs with EcoFlow’s Smart Home Panel 2 for automatic switchover on selected circuits. The R4000 includes a UPS function and a 30A RV port that is handy for campers, but ALLPOWERS doesn’t list battery expansion or a dedicated home-panel product for it. You can still use it with a manual transfer switch or inlet box installed by an electrician, as with most portable stations.
Winner: EcoFlow DELTA Pro 3, by a wide margin.
Portability and noise
Neither of these is something you carry by hand. Both have wheels and a pull handle. At about 99 pounds the R4000 is roughly 14 pounds lighter than the DELTA Pro 3, which matters when you’re rolling it over a threshold or into an RV. Reviewers note the R4000’s fans get noticeably loud under heavy load and its screen can’t be dimmed; EcoFlow claims the DELTA Pro 3 can run as quietly as about 30 dB in quiet mode.
Winner: Tie. The R4000 is lighter; the DELTA Pro 3 is quieter by EcoFlow’s claims.
Value
Value is the R4000’s whole case. ALLPOWERS frequently runs deep discounts that put it in the value tier, which makes it one of the cheapest ways to get around 3.5kWh of LiFePO4 storage with a five-year warranty. The DELTA Pro 3 costs more, often by a large margin, but includes 240V output, expansion and panel integration that the R4000 can’t match. If you only need 120V, the R4000 stretches your budget further.
Winner: ALLPOWERS R4000.
Pros and cons
ALLPOWERS R4000
|
EcoFlow DELTA Pro 3
|
What owners say (ALLPOWERS R4000): Owners like the huge capacity for the price, the solid build and how easily it handles a refrigerator’s startup surge. Common complaints are its weight, fan noise under load and solar charging that falls short of the advertised maximum.
What owners say (EcoFlow DELTA Pro 3): Buyers are mainly drawn to its 240V output, expansion options and home-panel integration, which make it feel like a home backup system rather than a camping gadget. The most common gripes are the high price and the added cost of the panel and extra batteries.
Which should you buy?
- Budget-minded outage backup (fridge, freezer, Wi-Fi, lights): ALLPOWERS R4000.
- RV owners: ALLPOWERS R4000, thanks to its 30A RV port and lower weight.
- Homes with 240V needs, like a well pump: EcoFlow DELTA Pro 3.
- Whole-home or multi-day backup you can expand later: EcoFlow DELTA Pro 3 with extra batteries and Smart Home Panel 2.
- Large solar setups: EcoFlow DELTA Pro 3, for its 2,600W dual inputs.
Check price: EcoFlow DELTA Pro 3 →
ALLPOWERS is currently offering an extra 12% off sitewide with code APBF12 through December 14, 2026. See the ALLPOWERS offer →
Alternatives worth a look
- ALLPOWERS R3500: A smaller, cheaper sibling for buyers who want ALLPOWERS value with less weight. Check price at ALLPOWERS →
- Anker SOLIX F3800 Plus: A 240V-capable, expandable rival to the DELTA Pro 3 for home backup. Check price on Amazon →
- Jackery Explorer 5000 Plus: A larger expandable station with 240V support for bigger homes. Check price on Amazon →
FAQ
Can the ALLPOWERS R4000 run a refrigerator?
Yes. Its 3,600W rated output and 6,000W peak are well above what a typical household refrigerator needs to start and run. How long it lasts depends on your fridge’s actual energy use, so check its label or measure it with a plug-in meter.
Does the EcoFlow DELTA Pro 3 need an electrician to power my house?
To feed household circuits, you need a transfer switch, inlet box or EcoFlow’s Smart Home Panel 2, and these should be installed by a licensed electrician to meet code and keep line workers safe. Plugging appliances directly into the unit needs no installation.
Is the R4000 really 4,000W?
ALLPOWERS markets it as a 4,000W station, but its spec sheet lists a 3,600W inverter with a 6,000W peak. Plan your loads around 3,600W continuous to be safe.
Can I use either one indoors?
Yes. Battery power stations produce no exhaust, so unlike gas generators they can be used indoors. Keep them ventilated, away from water and follow the manufacturer’s safety instructions.
Related guides
- The Best Portable Power Stations for Home Backup of 2026
- Best 240V Power Stations of 2026
- Anker SOLIX F3800 Plus vs EcoFlow DELTA Pro 3
- The Best Home Battery Backup Systems of 2026
- Home Comfort, Backup Power & Tool Guides
Sources
ALLPOWERS R4000 product page; EcoFlow DELTA Pro 3 product page; Exspenditure: ALLPOWERS R4000, R3500 and R2500 review; HowToTechInfo: ALLPOWERS R4000 review. Owner feedback is summarized in our own words from public reviews. Photos courtesy of Unsplash.