Capacity
Higher is better | Scale max: 6,144 Wh | Delta Pro Ultra X leads
Delta Pro 3,600 Wh
Delta Pro Ultra X 6,144 Wh
Delta Pro Ultra X: +2,544 Wh (+70.7%).
Delta Pro vs Delta Pro Ultra X
VS
3,600W
Running power
12,000W
3,600 Wh
Battery
6,144 Wh
99.2 lbs
Weight
187.4 lbs
At a Glance
This comparison targets buyers choosing between two EcoFlow LFP portable power stations that share expandable designs and 20-panel solar compatibility but sit in very different weight and output classes. The Delta Pro delivers 3600W of running power with 7200W surge from a 3600 Wh battery, weighing 99.2 lbs. The Ultra X nearly triples that output at 12000W running and 24000W surge, packing 6144 Wh into a 187.4 lb chassis.
In device compatibility testing across 53 appliances, the Ultra X powered every single one, while the Delta Pro handled 47 of 53. Solar charging also favors the Ultra X: its 10000W max input fills the larger battery in roughly 7.3 hours, compared to 12.9 hours for the Delta Pro at 1600W max input. The tradeoff is clear.
The Delta Pro is nearly half the weight, making it far more practical for transport and mobile use.
Overall Winner
Delta Pro Ultra X
Powers 53 of 53 tested devices vs 47 for Delta Pro
Home backup: Delta Pro Ultra X RV / mobile: Delta Pro Solar: Delta Pro Ultra X
Delta Pro Ultra X wins overall, but the best pick depends on your use case.
Choose Delta Pro if...
- + Portability matters (99 lbs vs 187)
Choose Delta Pro Ultra X 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: 12,000 W | Delta Pro Ultra X leads
Delta Pro 3,600 W
Delta Pro Ultra X 12,000 W
Delta Pro Ultra X: +8,400 W (+233.3%).
Surge Power
Higher is better | Scale max: 24,000 W | Delta Pro Ultra X leads
Delta Pro 7,200 W
Delta Pro Ultra X 24,000 W
Delta Pro Ultra X: +16,800 W (+233.3%).
Weight
Lower is better | Scale best: 99.2 lbs | Delta Pro leads
Delta Pro 99.2 lbs (45.0 kg)
Delta Pro Ultra X 187.4 lbs (85.0 kg)
Delta Pro: -88.2 lbs (47.1% lighter).
Battery Life
Higher is better | Scale max: 3,500 cycles | Delta Pro leads
Delta Pro 3,500 cycles
Delta Pro Ultra X 3,200 cycles
Delta Pro: +300 cycles (+9.4%).
Where Compatibility Actually Differs
Out of 53 devices tested, 6 show a different result between these two stations.
Both can run: 47 · Differences: 11% (6/53)
Only Delta Pro Ultra X can run 6
Electric Water Heater (50 Gal) Delta Pro: Voltage mismatch
Well Pump (1 HP) Delta Pro: Voltage mismatch
Central AC (3-Ton) 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
Full Specs Comparison
| Spec | Delta Pro | Delta Pro Ultra X |
|---|---|---|
| Capacity | 3,600 Wh | 6,144 Wh ✓ |
| Running Power | 3,600 W | 12,000 W ✓ |
| Surge Power | 7,200 W | 24,000 W ✓ |
| Weight | 99.2 lbs (45.0 kg) ✓ | 187.4 lbs (85.0 kg) |
| Energy Density | 80.0 Wh/kg ✓ | 72.3 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 X
Faster Max solar input 10,000 W
Connector MC4
Full charge time ~7.3h
Compatible panels 20/20
MPPT: 80-500V
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 X
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)
6/77/7
6/7
7/7
| Device | Delta Pro | Runtime | Delta Pro Ultra X | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 30.4h | Safe | 51.8h |
| Central AC (3-Ton) | Voltage Fail | N/A | Tight | 1.1h |
| 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 X | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Safe | 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 X | 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 home backup or off-grid power in a sub-100 lb package they can actually move without help. The Ultra X is built for whole-home backup or heavy-load scenarios where 12000W continuous output and full device coverage matter more than portability. With a score of 105 to 95 and a perfect 53-of-53 compatibility result, the Delta Pro Ultra X is the overall winner in this matchup.
Delta Pro vs Delta Pro Ultra X FAQ
Q Which is better for home backup, Delta Pro or Delta Pro Ultra X?
Delta Pro Ultra X 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 X?
Delta Pro Ultra X 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 X 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 X?
Delta Pro is lighter at 99.2 lbs vs 187.4 lbs. Delta Pro is rated heavy for portability.
Q How many devices can each power station run?
Delta Pro Ultra X powers 53 of 53 tested devices, compared to 47 for Delta Pro.