Capacity
Higher is better | Scale max: 6,144 Wh | Delta Pro Ultra leads
Delta Pro 3,600 Wh
Delta Pro Ultra 6,144 Wh
Delta Pro Ultra: +2,544 Wh (+70.7%).
Delta Pro vs Delta Pro Ultra
VS
3,600W
Running power
6,000W
3,600 Wh
Battery
6,144 Wh
99.2 lbs
Weight
182.1 lbs
At a Glance
This comparison targets buyers choosing between EcoFlow's two largest portable power stations for home backup, off-grid use, or heavy solar setups. The Delta Pro Ultra nearly doubles the Delta Pro in every core spec: 6000W running power vs. 3600W, 6144 Wh of battery capacity vs. 3600 Wh, and 12000W surge vs. 7200W.
Solar input tells a similar story, with the Ultra accepting up to 5600W compared to 1600W, cutting a full solar charge from roughly 12.9 hours down to 8. In device compatibility testing across 53 appliances, the Ultra powered 52 while the Pro handled 47, giving it a clear edge for whole-home coverage.
Both use LFP chemistry and are expandable. The tradeoff is weight: at 182.1 lbs, the Ultra is nearly twice as heavy as the 99.2 lb Pro, which matters if portability is part of your plan.
Overall Winner
Delta Pro Ultra
Powers 52 of 53 tested devices vs 47 for Delta Pro
Home backup: Delta Pro Ultra RV / mobile: Delta Pro Solar: Delta Pro Ultra
Delta Pro Ultra wins overall, but the best pick depends on your use case.
Choose Delta Pro if...
- + Portability matters (99 lbs vs 182)
Choose Delta Pro Ultra if...
- + You want faster solar recharging
- + You need 240V-capable loads
- + You want broader device compatibility
- + You need all-day runtime headroom
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: 6,000 W | Delta Pro Ultra leads
Delta Pro 3,600 W
Delta Pro Ultra 6,000 W
Delta Pro Ultra: +2,400 W (+66.7%).
Surge Power
Higher is better | Scale max: 12,000 W | Delta Pro Ultra leads
Delta Pro 7,200 W
Delta Pro Ultra 12,000 W
Delta Pro Ultra: +4,800 W (+66.7%).
Weight
Lower is better | Scale best: 99.2 lbs | Delta Pro leads
Delta Pro 99.2 lbs (45.0 kg)
Delta Pro Ultra 182.1 lbs (82.6 kg)
Delta Pro: -82.9 lbs (45.5% lighter).
Battery Life
Higher is better | Scale max: 3,500 cycles | Delta Pro leads
Delta Pro 3,500 cycles
Delta Pro Ultra 3,200 cycles
Delta Pro: +300 cycles (+9.4%).
Where Compatibility Actually Differs
Out of 53 devices tested, 5 show a different result between these two stations.
Both can run: 47 · Differences: 9% (5/53) · Neither can run: 1
Only Delta Pro Ultra can run 5
Electric Water Heater (50 Gal) Delta Pro: Voltage mismatch
Well Pump (1 HP) Delta Pro: Voltage mismatch
Electric Clothes Dryer Delta Pro: Voltage mismatch
RV Rooftop AC (13,500 BTU) Delta Pro: Needs soft-start
Pancake Air Compressor (6-Gallon) Delta Pro: Needs soft-start
Neither can run · 1 devices
These are 240V or high-voltage devices — neither station supports them.
Central AC (3-Ton)
Full Specs Comparison
| Spec | Delta Pro | Delta Pro Ultra |
|---|---|---|
| Capacity | 3,600 Wh | 6,144 Wh ✓ |
| Running Power | 3,600 W | 6,000 W ✓ |
| Surge Power | 7,200 W | 12,000 W ✓ |
| Weight | 99.2 lbs (45.0 kg) ✓ | 182.1 lbs (82.6 kg) |
| Energy Density | 80.0 Wh/kg ✓ | 74.4 Wh/kg |
| Portability Tier | heavy | stationary |
| Chemistry | LFP | LFP |
| Cycle Life | 3,500 ✓ | 3,200 |
| Expandable | Yes | Yes |
| UPS | No | No |
| AC Voltage | 120V | 120V/240V |
Solar Charging
Best-case charging profile using compatible solar panels.
Delta Pro
Max solar input 1,600 W
Connector XT60i
Full charge time ~12.9h
Compatible panels 20/20
MPPT: 11-150V
Delta Pro Ultra
Faster Max solar input 5,600 W
Connector MC4
Full charge time ~8.0h
Compatible panels 20/20
MPPT: 80-450V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
Delta ProDelta Pro Ultra
Emergency(2)
2/22/2
2/2
2/2
Entertainment(2)
2/22/2
2/2
2/2
EV & Transportation(2)
2/22/2
2/2
2/2
Heating & Cooling(7)
6/76/7
6/7
6/7
| Device | Delta Pro | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 30.4h | Safe | 51.8h |
| Central AC (3-Ton) | Voltage Fail | N/A | Fail | N/A |
| Dehumidifier (70 Pint) | Safe | 2.9h | Safe | 5h |
| Gas Furnace Fan (Blower) | Safe | 2.4h | Safe | 4.1h |
| Portable AC (12,000 BTU) | Safe | 1.9h | Safe | 3.2h |
| Space Heater (1,500W) | Safe | 1.7h | Safe | 2.9h |
| Window AC (8,000 BTU) | Safe | 3.5h | Safe | 6.1h |
Home Infrastructure(3)
1/33/3
1/3
3/3
| Device | Delta Pro | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Tight | 0.8h |
| Garage Door Opener (Residential) | Safe | 14h | Safe | 23.9h |
| Well Pump (1 HP) | Voltage Fail | N/A | Safe | 1.8h |
Kitchen Appliances(11)
11/1111/11
11/11
11/11
| Device | Delta Pro | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 1.7h | Safe | 2.9h |
| Coffee Maker | Safe | 1.6h | Safe | 2.7h |
| Digital Air Fryer | Safe | 1.5h | Safe | 2.5h |
| Electric Skillet | Safe | 1.7h | Safe | 2.9h |
| Electric Stove (Single Burner) | Safe | 1.4h | Safe | 2.4h |
| Electric Water Kettle | Safe | 1.7h | Safe | 2.9h |
| Instant Pot (6 Qt) | Safe | 1.7h | Safe | 2.9h |
| Microwave Oven (1000W) | Safe | 1.3h | Safe | 2.2h |
| Rice Cooker | Safe | 2.7h | Safe | 4.6h |
| Slow Cooker | Safe | 8.4h | Safe | 14.3h |
| Toaster Oven | Safe | 1.4h | Safe | 2.4h |
Large Appliances(4)
3/44/4
3/4
4/4
Medical(4)
4/44/4
4/4
4/4
Outdoor & RV(6)
5/66/6
5/6
6/6
Personal Care(2)
2/22/2
2/2
2/2
Power Tools(5)
4/55/5
4/5
5/5
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The Bottom Line
The Delta Pro suits buyers who need solid 3600W output and 3600 Wh capacity in a sub-100 lb package, especially for camping, tailgating, or partial home backup. The Delta Pro Ultra is the better fit for full-home backup and large solar arrays, covering nearly every tested device with 6000W of continuous power. With a higher overall score of 102 vs. 95 and broader device compatibility, the Delta Pro Ultra is the winner of this matchup.
Delta Pro vs Delta Pro Ultra FAQ
Q Which is better for home backup, Delta Pro or Delta Pro Ultra?
Delta Pro Ultra is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, Delta Pro or Delta Pro Ultra?
Delta Pro Ultra has higher battery capacity (6,144 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
Delta Pro Ultra has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, Delta Pro or Delta Pro Ultra?
Delta Pro is lighter at 99.2 lbs vs 182.1 lbs. Delta Pro is rated heavy for portability.
Q How many devices can each power station run?
Delta Pro Ultra powers 52 of 53 tested devices, compared to 47 for Delta Pro.