Capacity
Higher is better | Scale max: 6,144 Wh | Delta Pro Ultra leads
DELTA (Gen 1) 1,260 Wh
Delta Pro Ultra 6,144 Wh
Delta Pro Ultra: +4,884 Wh (+387.6%).
DELTA (Gen 1) vs Delta Pro Ultra
VS
1,800W
Running power
6,000W
1,260 Wh
Battery
6,144 Wh
30.9 lbs
Weight
182.1 lbs
At a Glance
This comparison targets buyers choosing between a portable, mid-capacity power station and a heavy-duty home backup system, both from EcoFlow. The DELTA (Gen 1) delivers 1800W of running power from a 1260 Wh NMC battery and weighs just 30.9 lbs, making it genuinely portable for camping, tailgating, or light emergency use.
The Delta Pro Ultra operates on a different scale entirely: 6000W running output, 6144 Wh of LFP battery capacity, 12000W surge capability, and expandable storage. It powered 52 of 53 tested devices compared to 40 for the DELTA, earning a score of 102 versus 75.5.
LFP chemistry gives the Pro Ultra roughly four times the cycle life at 3200 versus 800. The tradeoff is weight and mobility: at 182.1 lbs, the Pro Ultra is a stationary unit, not something you toss in a truck bed on a whim.
Overall Winner
Delta Pro Ultra
Powers 52 of 53 tested devices vs 40 for DELTA (Gen 1)
Home backup: Delta Pro Ultra RV / mobile: DELTA (Gen 1) Solar: Tie
Delta Pro Ultra wins overall, but the best pick depends on your use case.
Choose DELTA (Gen 1) if...
- + Portability matters (31 lbs vs 182)
- + You want faster solar recharging
Choose Delta Pro Ultra if...
- + You value battery longevity (LFP, 3,200 cycles)
- + You need 240V-capable loads
- + You want future battery expansion
- + 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 (Gen 1) 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 (Gen 1) 3,300 W
Delta Pro Ultra 12,000 W
Delta Pro Ultra: +8,700 W (+263.6%).
Weight
Lower is better | Scale best: 30.9 lbs | DELTA (Gen 1) leads
DELTA (Gen 1) 30.9 lbs (14.0 kg)
Delta Pro Ultra 182.1 lbs (82.6 kg)
DELTA (Gen 1): -151.2 lbs (83.1% lighter).
Battery Life
Higher is better | Scale max: 3,200 cycles | Delta Pro Ultra leads
DELTA (Gen 1) 800 cycles
Delta Pro Ultra 3,200 cycles
Delta Pro Ultra: +2,400 cycles (+300.0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 12 show a different result between these two stations.
Both can run: 40 · Differences: 23% (12/53) · Neither can run: 1
Only Delta Pro Ultra can run 12
Circular Saw (Corded) DELTA (Gen 1): Surge shortfall
Electric Chainsaw (14-inch) DELTA (Gen 1): Surge shortfall
Pancake Air Compressor (6-Gallon) DELTA (Gen 1): Surge shortfall
Shop Vac (Wet/Dry, 5-6 HP Peak) DELTA (Gen 1): Surge shortfall
Dehumidifier (70 Pint) DELTA (Gen 1): Needs soft-start
Portable AC (12,000 BTU) DELTA (Gen 1): Needs soft-start
Electric Water Heater (50 Gal) DELTA (Gen 1): Voltage mismatch
Well Pump (1 HP) DELTA (Gen 1): Voltage mismatch
Sump Pump (1/2 HP) DELTA (Gen 1): Needs soft-start
Microwave Oven (1000W) DELTA (Gen 1): Running shortfall
Electric Clothes Dryer DELTA (Gen 1): Voltage mismatch
RV Rooftop AC (13,500 BTU) DELTA (Gen 1): 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 (Gen 1) | Delta Pro Ultra |
|---|---|---|
| Capacity | 1,260 Wh | 6,144 Wh ✓ |
| Running Power | 1,800 W | 6,000 W ✓ |
| Surge Power | 3,300 W | 12,000 W ✓ |
| Weight | 30.9 lbs (14.0 kg) ✓ | 182.1 lbs (82.6 kg) |
| Energy Density | 90.0 Wh/kg ✓ | 74.4 Wh/kg |
| Portability Tier | portable | stationary |
| Chemistry | NMC | LFP |
| Cycle Life | 800 | 3,200 ✓ |
| Expandable | No | Yes |
| UPS | No | No |
| AC Voltage | 120V | 120V/240V |
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
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 (Gen 1)Delta Pro Ultra
Emergency(2)
1/22/2
1/2
2/2
| Device | DELTA (Gen 1) | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Safe | 5.5h | Safe | 26.9h |
| Sump Pump (1/2 HP) | Soft Start | 0.8h | Safe | 3.8h |
Entertainment(2)
2/22/2
2/2
2/2
EV & Transportation(2)
2/22/2
2/2
2/2
Heating & Cooling(7)
4/76/7
4/7
6/7
| Device | DELTA (Gen 1) | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 10.6h | Safe | 51.8h |
| Central AC (3-Ton) | Voltage Fail | N/A | Fail | N/A |
| Dehumidifier (70 Pint) | Soft Start | 1h | Safe | 5h |
| Gas Furnace Fan (Blower) | Safe | 0.8h | Safe | 4.1h |
| Portable AC (12,000 BTU) | Soft Start | 0.6h | Safe | 3.2h |
| Space Heater (1,500W) | Safe | 0.6h | Safe | 2.9h |
| Window AC (8,000 BTU) | Safe | 1.2h | Safe | 6.1h |
Home Infrastructure(3)
1/33/3
1/3
3/3
| Device | DELTA (Gen 1) | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Tight | 0.8h |
| Garage Door Opener (Residential) | Safe | 4.9h | 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 (Gen 1) | Runtime | Delta Pro Ultra | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 0.6h | Safe | 2.9h |
| Coffee Maker | Safe | 0.6h | Safe | 2.7h |
| Digital Air Fryer | Tight | 0.5h | Safe | 2.5h |
| Electric Skillet | Safe | 0.6h | Safe | 2.9h |
| Electric Stove (Single Burner) | Tight | 0.5h | Safe | 2.4h |
| Electric Water Kettle | Safe | 0.6h | Safe | 2.9h |
| Instant Pot (6 Qt) | Safe | 0.6h | Safe | 2.9h |
| Microwave Oven (1000W) | Fail | N/A | Safe | 2.2h |
| Rice Cooker | Safe | 0.9h | Safe | 4.6h |
| Slow Cooker | Safe | 2.9h | Safe | 14.3h |
| Toaster Oven | Tight | 0.5h | 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
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The Bottom Line
The DELTA (Gen 1) suits buyers who need a grab-and-go station under 31 lbs for occasional outdoor use or powering smaller devices during short outages. The Delta Pro Ultra is built for whole-home backup scenarios, high-draw appliances, and serious off-grid solar setups pulling up to 5600W of panel input. The Delta Pro Ultra is the clear winner here, offering far greater capacity, device coverage, and long-term durability for anyone whose power needs extend beyond the basics.
DELTA (Gen 1) vs Delta Pro Ultra FAQ
Q Which is better for home backup, DELTA (Gen 1) 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 (Gen 1) 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 (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 Delta Pro Ultra?
DELTA (Gen 1) is lighter at 30.9 lbs vs 182.1 lbs. DELTA (Gen 1) 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 40 for DELTA (Gen 1).
Q Can you expand the battery capacity of DELTA (Gen 1) or Delta Pro Ultra?
Only Delta Pro Ultra supports expansion batteries for additional capacity. DELTA (Gen 1) is limited to its built-in 1,260 Wh.