Capacity
Higher is better | Scale max: 2,048 Wh | DELTA 2 Max leads
DELTA 2 Max 2,048 Wh
RIVER 2 Pro 768 Wh
DELTA 2 Max: +1,280 Wh (+166.7%).
DELTA 2 Max vs RIVER 2 Pro
VS
2,400W
Running power
800W
2,048 Wh
Battery
768 Wh
50.7 lbs
Weight
18.3 lbs
At a Glance
This comparison targets buyers choosing between two EcoFlow LFP stations that sit at very different points on the capacity spectrum. The DELTA 2 Max delivers 2,048 Wh of storage and 2,400W of running power, enough to cover 45 out of 53 devices in our compatibility testing. The RIVER 2 Pro, with 768 Wh and 800W output, powered just 22 of those same devices.
That gap carries over to solar charging: the DELTA 2 Max accepts up to 1,000W of panel input and works with 19 compatible solar panels, while the RIVER 2 Pro tops out at 220W across 17 panels. Both units share LFP chemistry rated for 3,000 cycles, and neither offers UPS functionality. The key tradeoff is weight.
At 18.3 lbs, the RIVER 2 Pro is less than half the DELTA 2 Max's 50.7 lbs, making it far easier to grab and go.
Overall Winner
DELTA 2 Max
Powers 45 of 53 tested devices vs 22 for RIVER 2 Pro
Home backup: DELTA 2 Max RV / mobile: RIVER 2 Pro Solar: Tie
DELTA 2 Max wins overall, but the best pick depends on your use case.
Choose DELTA 2 Max if...
- + You want future battery expansion
- + You want broader device compatibility
- + You need all-day runtime headroom
Choose RIVER 2 Pro if...
- + Portability matters (18 lbs vs 51)
- + You want faster solar recharging
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: 2,400 W | DELTA 2 Max leads
DELTA 2 Max 2,400 W
RIVER 2 Pro 800 W
DELTA 2 Max: +1,600 W (+200.0%).
Surge Power
Higher is better | Scale max: 4,800 W | DELTA 2 Max leads
DELTA 2 Max 4,800 W
RIVER 2 Pro 1,600 W
DELTA 2 Max: +3,200 W (+200.0%).
Weight
Lower is better | Scale best: 18.3 lbs | RIVER 2 Pro leads
DELTA 2 Max 50.7 lbs (23.0 kg)
RIVER 2 Pro 18.3 lbs (8.3 kg)
RIVER 2 Pro: -32.4 lbs (63.9% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
DELTA 2 Max 3,000 cycles
RIVER 2 Pro 3,000 cycles
Delta: Tie (0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 23 show a different result between these two stations.
Both can run: 22 · Differences: 43% (23/53) · Neither can run: 8
Only DELTA 2 Max can run 23
Digital Air Fryer RIVER 2 Pro: Running + surge shortfall
Electric Stove (Single Burner) RIVER 2 Pro: Running + surge shortfall
Microwave Oven (1000W) 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
Dehumidifier (70 Pint) RIVER 2 Pro: Running + surge shortfall
Gas Furnace Fan (Blower) RIVER 2 Pro: Running + surge shortfall
Portable AC (12,000 BTU) 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
Corded Drill / Hammer Drill RIVER 2 Pro: Running + surge shortfall
Shop Vac (Wet/Dry, 5-6 HP Peak) RIVER 2 Pro: Running + surge shortfall
Sump Pump (1/2 HP) RIVER 2 Pro: Running + surge 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
Neither can run · 8 devices
These are 240V or high-voltage devices — neither station supports them.
Central AC (3-Ton)
Electric Clothes Dryer
Circular Saw (Corded)
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
RV Rooftop AC (13,500 BTU)
Full Specs Comparison
| Spec | DELTA 2 Max | RIVER 2 Pro |
|---|---|---|
| Capacity | 2,048 Wh ✓ | 768 Wh |
| Running Power | 2,400 W ✓ | 800 W |
| Surge Power | 4,800 W ✓ | 1,600 W |
| Weight | 50.7 lbs (23.0 kg) | 18.3 lbs (8.3 kg) ✓ |
| Energy Density | 89.0 Wh/kg | 92.5 Wh/kg ✓ |
| Portability Tier | portable | ultralight |
| Chemistry | LFP | LFP |
| Cycle Life | 3,000 | 3,000 |
| Expandable | Yes | No |
| UPS | No | No |
| AC Voltage | 120V | 120V |
Solar Charging
Best-case charging profile using compatible solar panels.
DELTA 2 Max
Max solar input 1,000 W
Connector XT60i
Full charge time ~7.3h
Compatible panels 19/20
MPPT: 11-60V
RIVER 2 Pro
Faster 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 2 MaxRIVER 2 Pro
Emergency(2)
2/21/2
2/2
1/2
Entertainment(2)
2/21/2
2/2
1/2
EV & Transportation(2)
2/21/2
2/2
1/2
Heating & Cooling(7)
6/71/7
6/7
1/7
| Device | DELTA 2 Max | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 17.3h | Safe | 6.5h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Safe | 1.7h | Fail | N/A |
| Gas Furnace Fan (Blower) | Safe | 1.4h | Fail | N/A |
| Portable AC (12,000 BTU) | Tight | 1.1h | Fail | N/A |
| Space Heater (1,500W) | Safe | 1h | Fail | N/A |
| Window AC (8,000 BTU) | Safe | 2h | Fail | N/A |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | DELTA 2 Max | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 8h | Safe | 3h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
11/111/11
11/11
1/11
| Device | DELTA 2 Max | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 1h | Fail | N/A |
| Coffee Maker | Safe | 0.9h | Fail | N/A |
| Digital Air Fryer | Safe | 0.8h | Fail | N/A |
| Electric Skillet | Safe | 1h | Fail | N/A |
| Electric Stove (Single Burner) | Safe | 0.8h | Fail | N/A |
| Electric Water Kettle | Safe | 1h | Fail | N/A |
| Instant Pot (6 Qt) | Safe | 1h | Fail | N/A |
| Microwave Oven (1000W) | Safe | 0.7h | Fail | N/A |
| Rice Cooker | Safe | 1.5h | Fail | N/A |
| Slow Cooker | Safe | 4.8h | Safe | 1.8h |
| Toaster Oven | Safe | 0.8h | Fail | N/A |
Large Appliances(4)
3/41/4
3/4
1/4
| Device | DELTA 2 Max | Runtime | RIVER 2 Pro | Runtime |
|---|---|---|---|---|
| Dishwasher | Safe | 0.8h | Fail | N/A |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Safe | 6.9h | Safe | 2.6h |
| Washing Machine | Safe | 1.1h | 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)
2/50/5
2/5
0/5
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The Bottom Line
Pick the DELTA 2 Max if you need serious home backup capacity or plan to run high-draw appliances; its 2,400W output and expandable battery cover use cases the smaller unit simply cannot reach. The RIVER 2 Pro fits buyers who prioritize portability for camping or light travel and only need to power phones, laptops, and small electronics. With an overall score of 88.5 versus 44, the DELTA 2 Max is the clear winner in this matchup.
DELTA 2 Max vs RIVER 2 Pro FAQ
Q Which is better for home backup, DELTA 2 Max or RIVER 2 Pro?
DELTA 2 Max is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, DELTA 2 Max or RIVER 2 Pro?
DELTA 2 Max has higher battery capacity (2,048 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
RIVER 2 Pro has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, DELTA 2 Max or RIVER 2 Pro?
RIVER 2 Pro is lighter at 18.3 lbs vs 50.7 lbs. RIVER 2 Pro is rated ultralight for portability.
Q How many devices can each power station run?
DELTA 2 Max powers 45 of 53 tested devices, compared to 22 for RIVER 2 Pro.
Q Can you expand the battery capacity of DELTA 2 Max or RIVER 2 Pro?
Only DELTA 2 Max supports expansion batteries for additional capacity. RIVER 2 Pro is limited to its built-in 768 Wh.