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The verdict on ecoflow delta 2 vs ecoflow river 2 is simple: pick the RIVER 2 Pro if you want portable power, and pick the DELTA 2 Max if you need home-scale capacity. We compared the two listings on what each states: capacity, output, outlets, charging, expansion and warranty terms. Every figure below comes from the listings. Note the delta 2 side listing is the DELTA 2 Max, the larger model, not the base DELTA 2.
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Ecoflow Delta 2 vs Ecoflow River 2: side by side
| Delta 2 vs River 2 | EcoFlow DELTA 2 Max | EcoFlow RIVER 2 Pro |
|---|---|---|
| Side | ecoflow delta 2 | ecoflow river 2 |
| Capacity | 2048Wh | 768Wh |
| Output | 2400W (3400W X-Boost) | 800W (1600W X-Boost) |
| Outlets | 15 | 11 |
| Weight | 71 lb | 17.2 lb |
| Warranty | 5 years | 5 years |
Specifications are manufacturer rated as listed, collected 21 October 2026.
Capacity and output
This is the gap that decides the pick. The DELTA 2 Max listing states 2048Wh of LiFePO4 capacity with 2400W continuous output and up to 3400W with X-Boost, across 15 outlets, and claims it runs 99% of household devices. The RIVER 2 Pro listing states 768Wh with 800W output and up to 1600W with X-Boost, across 11 outlets including 4 AC outlets and USB-C, and claims 80% of appliances. The DELTA 2 Max lists 71 pounds and 12.2 by 9.7 by 20 inches; the RIVER 2 Pro lists 17.2 pounds with a built-in handle and 10.5 by 10.1 by 8.5 inches. Do not call one side better on efficiency: neither listing states an efficiency figure.
Charging and expansion
Both listings push charging speed. The DELTA 2 Max states 80% in 43 minutes with AC plus up to 1000W of solar, or 80% in 1.1 hours on AC alone, and expands from 2kWh to 6kWh with up to 2 extra batteries in a plug-and-play design. The RIVER 2 Pro states a full AC recharge in 70 minutes with X-Stream charging and a full recharge in 3.5 hours from 220W of solar, with no expansion stated. Both listings state 3000 cycles to 80% capacity and a 5-year warranty. If you are still deciding on station size generally, our portable power station vs power bank comparison frames the choice.
What the listings leave unclear
Both spec tables list a 4-stroke engine with 79cc displacement, which does not fit a battery power station; trust the titles and bullets for what these are. The DELTA 2 Max title mentions a 220W solar panel bundle while the bullets describe the station. The RIVER 2 Pro title says 70-minute fast charging while the bullets describe the same figure, so the two agree.
Two examples
EcoFlow RIVER 2 Pro
A 768Wh LiFePO4 portable power station with 800W output, 11 outlets and advanced BMS protection, per the listing.
Pros
- 70-minute full AC recharge stated
- Advanced BMS protection monitoring voltage, current and temperature stated
- 17.2 pounds with a built-in handle stated
- 5-year warranty stated
Cons
- 800W continuous output, below the DELTA 2 Max's 2400W
- 768Wh with no expansion stated
- 220W solar input stated, below the DELTA 2 Max's 1000W
- Spec table lists a 4-stroke engine, which does not fit a battery station
Detailed Review
The listing states a 768Wh LiFePO4 portable power station with 800W output, 1600W X-Boost, 11 outlets including 4 AC outlets and USB-C, and advanced BMS protection monitoring voltage, current and temperature. It states a full AC recharge in 70 minutes, 220W solar input for a full charge in 3.5 hours, 17.2 pounds, 10.5 by 10.1 by 8.5 inches, 3000 cycles to 80% and a 5-year warranty. The spec table lists a 4-stroke engine with 79cc displacement, which does not fit a battery power station.
Who it's for: campers and anyone who wants a portable 768Wh station with fast AC charging at 17.2 pounds. Who should skip it: buyers who need more than 800W continuous output.
Its Solar Score of 9.7/10 comes from performance 29/35, build 21/25, value 21/25, safety 7/10 and warranty 4/5: 82 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 768Wh LiFePO4 |
|---|---|
| Output | 800W (1600W X-Boost) |
| Outlets | 11 |
| Charge | Full in 70 min AC |
Figures as published on the retailer listing, collected 21 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Advanced BMS protection monitoring voltage, current and temperature stated, so safety scores 7 of 10. 5 Year warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 4 of 5. See How We Pick.
Power station limits. Stay within the stated continuous output and solar input limits, keep the unit ventilated and dry, charge within the stated temperature range, and never connect it to home wiring except through equipment a licensed electrician installs.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
EcoFlow DELTA 2 Max
A 2048Wh LiFePO4 power station with 2400W output, 15 outlets and expansion to 6kWh, per the listing.
Pros
- 2048Wh expandable to 6kWh with up to 2 extra batteries stated
- 2400W output with up to 3400W X-Boost stated
- 80% charge in 43 minutes with AC plus solar stated
- 5-year warranty stated
Cons
- 71 pounds stated, the heavier unit here
- No BMS protection is stated in the listing
- This listing is the DELTA 2 Max, not the base DELTA 2
- Spec table lists a 4-stroke engine, which does not fit a battery station
Detailed Review
The listing states a 2048Wh LiFePO4 power station with 2400W output, up to 3400W with X-Boost, 15 outlets and up to 1000W solar input combined with AC for an 80% charge in 43 minutes. It states expansion from 2kWh to 6kWh with up to 2 extra batteries, 3000 cycles to 80% capacity, 30 dB quiet charging, 71 pounds, 12.2 by 9.7 by 20 inches and a 5-year warranty. Note this listing is the DELTA 2 Max, not the base DELTA 2. The spec table lists a 4-stroke engine with 79cc displacement, which does not fit a battery power station.
Who it's for: home backup and RV owners who want 2kWh-plus capacity with expansion to 6kWh. Who should skip it: anyone who needs a portable unit, at 71 pounds stated.
Its Solar Score of 9.6/10 comes from performance 34/35, build 21/25, value 20/25, safety 0/10 and warranty 4/5: 79 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 2048Wh LiFePO4 |
|---|---|
| Output | 2400W (3400W X-Boost) |
| Size | 12.2 x 9.7 x 20 in, 71 lb |
| Expansion | 2kWh to 6kWh |
Figures as published on the retailer listing, collected 21 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. No UL, FCC or battery management statement is stated, so safety scores zero. 5 year warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 4 of 5. See How We Pick.
Power station limits. Stay within the stated continuous output and solar input limits, keep the unit ventilated and dry, charge within the stated temperature range, and never connect it to home wiring except through equipment a licensed electrician installs.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
Where the points went
The Solar Score weighs performance, build, value, safety and warranty. For power stations, safety means the protections the listing actually states, such as a battery management system; the RIVER 2 Pro states advanced BMS protection, and the DELTA 2 Max states none. Both listings state a 5-year warranty.
| Product | Solar Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| EcoFlow RIVER 2 Pro | 9.7 | 29 | 21 | 21 | 7 | 4 |
| EcoFlow DELTA 2 Max | 9.6 | 34 | 21 | 20 | 0 | 4 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
Ecoflow Delta 2 vs Ecoflow River 2: which should you choose?
Choose the RIVER 2 Pro if the station travels with you: the listing states 768Wh, 800W output and 17.2 pounds with a built-in handle, plus a full recharge in 70 minutes. Choose the DELTA 2 Max if the station stays home: the listing states 2048Wh expandable to 6kWh, 2400W output with 3400W X-Boost and 15 outlets. For outage planning at larger sizes, see our best home backup power station roundup roundup, and for campsite use, our best portable power station for camping roundup.
| If you need | Look at |
|---|---|
| Portable 768Wh power | EcoFlow RIVER 2 Pro |
| 2048Wh expandable to 6kWh | EcoFlow DELTA 2 Max |
| 2400W output with X-Boost | EcoFlow DELTA 2 Max |
| Stated BMS protection | EcoFlow RIVER 2 Pro |
Sizing Notes
- The DELTA 2 Max states 2048Wh expandable to 6kWh with up to 2 extra batteries; the RIVER 2 Pro states 768Wh with no expansion stated.
- Match output to your loads: 2400W continuous with 3400W X-Boost against 800W with 1600W X-Boost.
- Weights are 71 pounds and 17.2 pounds stated; only the RIVER 2 Pro states a built-in handle.
- Both listings state 3000 cycles to 80% capacity and a 5-year warranty.
FAQ: power away from the grid
Which is bigger, the DELTA 2 Max or the RIVER 2 Pro?
The DELTA 2 Max: the listing states 2048Wh and 71 pounds against the RIVER 2 Pro’s 768Wh and 17.2 pounds.
Can the DELTA 2 Max run high-wattage appliances?
The listing states 2400W continuous output with up to 3400W in X-Boost mode, and claims 99% of household devices.
How fast do they charge?
The DELTA 2 Max listing states 80% in 43 minutes with AC plus solar, and the RIVER 2 Pro listing states a full AC recharge in 70 minutes.
Can the DELTA 2 Max be expanded?
Yes. The listing states expansion from 2kWh to 6kWh with up to 2 extra batteries in a plug-and-play design.
Do both state the same warranty?
Yes. Both listings state a 5-year warranty.
Related solar guides
See every Portable Power Stations guide and all Power Stations and Generators guides. Also see our portable power station vs power bank comparison. Also see our best home backup power station roundup roundup. Also see our best portable power station for camping roundup.
More picks: portable power station for off grid living, home backup power station for hurricane and dc to dc charger for power station.
