Capacity
Higher is better | Scale max: 6,144 Wh | Delta Pro Ultra leads
DELTA 3 Plus 1,024 Wh
Delta Pro Ultra 6,144 Wh
Delta Pro Ultra: +5,120 Wh (+500.0%).
DELTA 3 Plus vs Delta Pro Ultra
VS
1,800W
Running power
6,000W
1,024 Wh
Battery
6,144 Wh
27.6 lbs
Weight
182.1 lbs
At a Glance
This comparison targets buyers choosing between a portable EcoFlow unit and a high-capacity whole-home backup system from the same brand. The DELTA 3 Plus delivers 1800W of running power with a 1024 Wh LFP battery, weighing just 27.6 lbs. The Delta Pro Ultra scales up dramatically to 6000W running power and 6144 Wh of capacity, though it tips the scales at 182.1 lbs.
In device compatibility testing across 53 appliances, the Pro Ultra powered 52 while the DELTA 3 Plus handled 42, giving the larger unit a clear edge for broad household coverage. Solar input tells a similar story: 5600W max for the Pro Ultra versus 1000W for the DELTA 3 Plus. The tradeoff is straightforward.
You gain massive output and coverage but sacrifice portability, since the Pro Ultra weighs more than six times as much.
Overall Winner
Delta Pro Ultra
Powers 52 of 53 tested devices vs 42 for DELTA 3 Plus
Home backup: Delta Pro Ultra RV / mobile: DELTA 3 Plus Solar: Tie
Delta Pro Ultra wins overall, but the best pick depends on your use case.
Choose DELTA 3 Plus if...
- + Portability matters (28 lbs vs 182)
- + You want faster solar recharging
Choose Delta Pro Ultra if...
- + 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 3 Plus 1,800 W
Delta Pro Ultra 6,000 W
Delta Pro Ultra: +4,200 W (+233.3%).
Surge Power
Higher is better | Scale max: 12,000 W | Delta Pro Ultra leads
DELTA 3 Plus 3,600 W
Delta Pro Ultra 12,000 W
Delta Pro Ultra: +8,400 W (+233.3%).
Weight
Lower is better | Scale best: 27.6 lbs | DELTA 3 Plus leads
DELTA 3 Plus 27.6 lbs (12.5 kg)
Delta Pro Ultra 182.1 lbs (82.6 kg)
DELTA 3 Plus: -154.5 lbs (84.9% lighter).
Battery Life
Higher is better | Scale max: 4,000 cycles | DELTA 3 Plus leads
DELTA 3 Plus 4,000 cycles
Delta Pro Ultra 3,200 cycles
DELTA 3 Plus: +800 cycles (+25.0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 10 show a different result between these two stations.
Both can run: 42 · Differences: 19% (10/53) · Neither can run: 1
Only Delta Pro Ultra can run 10
Circular Saw (Corded) DELTA 3 Plus: Surge shortfall
Electric Chainsaw (14-inch) DELTA 3 Plus: Surge shortfall
Pancake Air Compressor (6-Gallon) DELTA 3 Plus: Surge shortfall
Shop Vac (Wet/Dry, 5-6 HP Peak) DELTA 3 Plus: Surge shortfall
Electric Water Heater (50 Gal) DELTA 3 Plus: Voltage mismatch
Well Pump (1 HP) DELTA 3 Plus: Voltage mismatch
Portable AC (12,000 BTU) DELTA 3 Plus: Needs soft-start
Microwave Oven (1000W) DELTA 3 Plus: Running shortfall
Electric Clothes Dryer DELTA 3 Plus: Voltage mismatch
RV Rooftop AC (13,500 BTU) DELTA 3 Plus: Surge shortfall
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 3 Plus | Delta Pro Ultra |
|---|---|---|
| Capacity | 1,024 Wh | 6,144 Wh ✓ |
| Running Power | 1,800 W | 6,000 W ✓ |
| Surge Power | 3,600 W | 12,000 W ✓ |
| Weight | 27.6 lbs (12.5 kg) ✓ | 182.1 lbs (82.6 kg) |
| Energy Density | 81.9 Wh/kg ✓ | 74.4 Wh/kg |
| Portability Tier | portable | stationary |
| Chemistry | LFP | LFP |
| Cycle Life | 4,000 ✓ | 3,200 |
| Expandable | Yes | Yes |
| UPS | No | No |
| AC Voltage | 120V | 120V/240V |
Solar Charging
Best-case charging profile using compatible solar panels.
DELTA 3 Plus
Faster Max solar input 1,000 W
Connector XT60i
Full charge time ~3.7h
Compatible panels 19/20
MPPT: 11-60V
Delta Pro Ultra
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 3 PlusDelta 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)
5/76/7
5/7
6/7
| Device | DELTA 3 Plus | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 8.6h | Safe | 51.8h |
| Central AC (3-Ton) | Voltage Fail | N/A | Fail | N/A |
| Dehumidifier (70 Pint) | Tight | 0.8h | Safe | 5h |
| Gas Furnace Fan (Blower) | Safe | 0.7h | Safe | 4.1h |
| Portable AC (12,000 BTU) | Soft Start | 0.5h | Safe | 3.2h |
| Space Heater (1,500W) | Safe | 0.5h | Safe | 2.9h |
| Window AC (8,000 BTU) | Safe | 1h | Safe | 6.1h |
Home Infrastructure(3)
1/33/3
1/3
3/3
| Device | DELTA 3 Plus | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Tight | 0.8h |
| Garage Door Opener (Residential) | Safe | 4h | Safe | 23.9h |
| Well Pump (1 HP) | Voltage Fail | N/A | Safe | 1.8h |
Kitchen Appliances(11)
10/1111/11
10/11
11/11
| Device | DELTA 3 Plus | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 0.5h | Safe | 2.9h |
| Coffee Maker | Safe | 0.4h | Safe | 2.7h |
| Digital Air Fryer | Tight | 0.4h | Safe | 2.5h |
| Electric Skillet | Safe | 0.5h | Safe | 2.9h |
| Electric Stove (Single Burner) | Tight | 0.4h | Safe | 2.4h |
| Electric Water Kettle | Safe | 0.5h | Safe | 2.9h |
| Instant Pot (6 Qt) | Safe | 0.5h | Safe | 2.9h |
| Microwave Oven (1000W) | Fail | N/A | Safe | 2.2h |
| Rice Cooker | Safe | 0.8h | Safe | 4.6h |
| Slow Cooker | Safe | 2.4h | Safe | 14.3h |
| Toaster Oven | Tight | 0.4h | 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)
1/55/5
1/5
5/5
As an Amazon Associate, we earn from qualifying purchases. Our methodology
The Bottom Line
The DELTA 3 Plus suits campers, remote workers, and anyone who needs a carry-friendly backup that still handles 42 out of 53 tested devices. The Delta Pro Ultra fits homeowners seeking serious whole-home power with 6000W output and near-total device coverage at 52 out of 53. With a score of 102 versus 76.5, the Delta Pro Ultra is the stronger pick for buyers who prioritize capacity and appliance range over portability.
DELTA 3 Plus vs Delta Pro Ultra FAQ
Q Which is better for home backup, DELTA 3 Plus 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 3 Plus 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 3 Plus has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, DELTA 3 Plus or Delta Pro Ultra?
DELTA 3 Plus is lighter at 27.6 lbs vs 182.1 lbs. DELTA 3 Plus is rated portable for portability.
Q How many devices can each power station run?
Delta Pro Ultra powers 52 of 53 tested devices, compared to 42 for DELTA 3 Plus.