Capacity
Higher is better | Scale max: 1,260 Wh | DELTA (Gen 1) leads
DELTA (Gen 1) 1,260 Wh
RIVER 2 Pro 768 Wh
DELTA (Gen 1): +492 Wh (+64.1%).
DELTA (Gen 1) vs RIVER 2 Pro
VS
1,800W
Running power
800W
1,260 Wh
Battery
768 Wh
30.9 lbs
Weight
18.3 lbs
At a Glance
This comparison targets buyers choosing between two EcoFlow portables that sit far apart in capability. The DELTA (Gen 1) delivers 1800W of running power and 1260 Wh of capacity, powering 40 out of 53 devices in our compatibility tests.
The RIVER 2 Pro manages 800W and 768 Wh, covering 22 of those same 53 devices. That gap shows up clearly in the overall scores: 75.5 for the DELTA versus 44 for the RIVER 2 Pro.
Solar input follows the same pattern, with the DELTA accepting up to 400W compared to 220W on the RIVER 2 Pro. The tradeoff centers on longevity and portability: the RIVER 2 Pro uses LFP chemistry rated for 3,000 cycles and weighs just 18.3 lbs, while the DELTA's NMC cells are rated for 800 cycles and the unit tips the scale at 30.9 lbs.
Overall Winner
DELTA (Gen 1)
Powers 40 of 53 tested devices vs 22 for RIVER 2 Pro
Home backup: DELTA (Gen 1) RV / mobile: RIVER 2 Pro Solar: DELTA (Gen 1)
DELTA (Gen 1) wins overall, but the best pick depends on your use case.
Choose DELTA (Gen 1) if...
- + You want faster solar recharging
- + You want broader device compatibility
- + You need all-day runtime headroom
Choose RIVER 2 Pro if...
- + Portability matters (18 lbs vs 31)
- + You value battery longevity (LFP, 3,000 cycles)
Spec Snapshot
Absolute values shown. Bars are scaled within this comparison for readability.
Each metric is independent. Bar lengths are not comparable across different compare pages.
Running Power
Higher is better | Scale max: 1,800 W | DELTA (Gen 1) leads
DELTA (Gen 1) 1,800 W
RIVER 2 Pro 800 W
DELTA (Gen 1): +1,000 W (+125.0%).
Surge Power
Higher is better | Scale max: 3,300 W | DELTA (Gen 1) leads
DELTA (Gen 1) 3,300 W
RIVER 2 Pro 1,600 W
DELTA (Gen 1): +1,700 W (+106.3%).
Weight
Lower is better | Scale best: 18.3 lbs | RIVER 2 Pro leads
DELTA (Gen 1) 30.9 lbs (14.0 kg)
RIVER 2 Pro 18.3 lbs (8.3 kg)
RIVER 2 Pro: -12.6 lbs (40.7% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | RIVER 2 Pro leads
DELTA (Gen 1) 800 cycles
RIVER 2 Pro 3,000 cycles
RIVER 2 Pro: +2,200 cycles (+275.0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 18 show a different result between these two stations.
Both can run: 22 · Differences: 34% (18/53) · Neither can run: 13
Only DELTA (Gen 1) can run 18
Digital Air Fryer RIVER 2 Pro: Running + surge shortfall
Electric Stove (Single Burner) RIVER 2 Pro: Running + surge shortfall
Toaster Oven RIVER 2 Pro: Running + surge shortfall
2-Slice Bread Toaster RIVER 2 Pro: Running shortfall
Coffee Maker RIVER 2 Pro: Running shortfall
Electric Skillet RIVER 2 Pro: Running shortfall
Electric Water Kettle RIVER 2 Pro: Running shortfall
Instant Pot (6 Qt) RIVER 2 Pro: Running shortfall
Rice Cooker RIVER 2 Pro: Running shortfall
Gas Furnace Fan (Blower) RIVER 2 Pro: Running + surge shortfall
Space Heater (1,500W) RIVER 2 Pro: Running shortfall
Window AC (8,000 BTU) RIVER 2 Pro: Surge shortfall
Dishwasher RIVER 2 Pro: Running + surge shortfall
Washing Machine RIVER 2 Pro: Running shortfall
Desktop PC (Gaming/Workstation) RIVER 2 Pro: Running shortfall
EV Charger (Level 1, 120V) RIVER 2 Pro: Running shortfall
Professional Hair Dryer RIVER 2 Pro: Running + surge shortfall
Corded Drill / Hammer Drill RIVER 2 Pro: Running + surge shortfall
Neither can run · 13 devices
These devices have startup surges that exceed both stations.
Microwave Oven (1000W)
Central AC (3-Ton)
Dehumidifier (70 Pint)
Portable AC (12,000 BTU)
Electric Clothes Dryer
Circular Saw (Corded)
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Shop Vac (Wet/Dry, 5-6 HP Peak)
Sump Pump (1/2 HP)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
RV Rooftop AC (13,500 BTU)
Full Specs Comparison
| Spec | DELTA (Gen 1) | RIVER 2 Pro |
|---|---|---|
| Capacity | 1,260 Wh ✓ | 768 Wh |
| Running Power | 1,800 W ✓ | 800 W |
| Surge Power | 3,300 W ✓ | 1,600 W |
| Weight | 30.9 lbs (14.0 kg) | 18.3 lbs (8.3 kg) ✓ |
| Energy Density | 90.0 Wh/kg | 92.5 Wh/kg ✓ |
| Portability Tier | portable | ultralight |
| Chemistry | NMC | LFP |
| Cycle Life | 800 | 3,000 ✓ |
| Expandable | No | No |
| UPS | No | No |
| AC Voltage | 120V | 120V |
Solar Charging
Best-case charging profile using compatible solar panels.
DELTA (Gen 1)
Faster Max solar input 400 W
Connector XT60
Full charge time ~4.5h
Compatible panels 19/20
MPPT: 10-65V
RIVER 2 Pro
Max solar input 220 W
Connector XT60i
Full charge time ~5.0h
Compatible panels 17/20
MPPT: 11-50V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
DELTA (Gen 1)RIVER 2 Pro
Emergency(2)
1/21/2
1/2
1/2
| Device | DELTA (Gen 1) | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Safe | 5.5h | Safe | 3.4h |
| Sump Pump (1/2 HP) | Soft Start | 0.8h | Fail | N/A |
Entertainment(2)
2/21/2
2/2
1/2
EV & Transportation(2)
2/21/2
2/2
1/2
Heating & Cooling(7)
4/71/7
4/7
1/7
| Device | DELTA (Gen 1) | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 10.6h | Safe | 6.5h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Soft Start | 1h | Fail | N/A |
| Gas Furnace Fan (Blower) | Safe | 0.8h | Fail | N/A |
| Portable AC (12,000 BTU) | Soft Start | 0.6h | Fail | N/A |
| Space Heater (1,500W) | Safe | 0.6h | Fail | N/A |
| Window AC (8,000 BTU) | Safe | 1.2h | Fail | N/A |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | DELTA (Gen 1) | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 4.9h | Safe | 3h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
10/111/11
10/11
1/11
| Device | DELTA (Gen 1) | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 0.6h | Fail | N/A |
| Coffee Maker | Safe | 0.6h | Fail | N/A |
| Digital Air Fryer | Tight | 0.5h | Fail | N/A |
| Electric Skillet | Safe | 0.6h | Fail | N/A |
| Electric Stove (Single Burner) | Tight | 0.5h | Fail | N/A |
| Electric Water Kettle | Safe | 0.6h | Fail | N/A |
| Instant Pot (6 Qt) | Safe | 0.6h | Fail | N/A |
| Microwave Oven (1000W) | Fail | N/A | Fail | N/A |
| Rice Cooker | Safe | 0.9h | Fail | N/A |
| Slow Cooker | Safe | 2.9h | Safe | 1.8h |
| Toaster Oven | Tight | 0.5h | Fail | N/A |
Large Appliances(4)
3/41/4
3/4
1/4
| Device | DELTA (Gen 1) | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Dishwasher | Tight | 0.5h | Fail | N/A |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Safe | 4.3h | Safe | 2.6h |
| Washing Machine | Safe | 0.7h | Fail | N/A |
Medical(4)
4/44/4
4/4
4/4
Outdoor & RV(6)
5/65/6
5/6
5/6
Personal Care(2)
2/21/2
2/2
1/2
Power Tools(5)
1/50/5
1/5
0/5
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The Bottom Line
Buyers who need dependable home backup power or want to run high-draw appliances should pick the DELTA (Gen 1); its 1800W output and broad device coverage make it the stronger all-around station. The RIVER 2 Pro earns its place for travelers and light-duty campers who value a 3,000-cycle lifespan and a unit light enough to carry one-handed.
The DELTA wins this matchup on capacity, wattage, and real-world device compatibility. In our 53-device benchmark, DELTA (Gen 1) powers 40 devices and RIVER 2 Pro powers 22.
DELTA (Gen 1) vs RIVER 2 Pro FAQ
Q Which is better for home backup, DELTA (Gen 1) or RIVER 2 Pro?
DELTA (Gen 1) is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, DELTA (Gen 1) or RIVER 2 Pro?
DELTA (Gen 1) has higher battery capacity (1,260 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
DELTA (Gen 1) has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, DELTA (Gen 1) or RIVER 2 Pro?
RIVER 2 Pro is lighter at 18.3 lbs vs 30.9 lbs. RIVER 2 Pro is rated ultralight for portability.
Q How many devices can each power station run?
DELTA (Gen 1) powers 40 of 53 tested devices, compared to 22 for RIVER 2 Pro.