Capacity
Delta Pro Ultra: +3,072 Wh (+100.0%).
This comparison targets buyers weighing raw power and device coverage against portability and faster solar recharging. The Delta Pro Ultra delivers 6,000W of running power and 6,144 Wh of capacity, nearly doubling the Pecron E3600LFP's 3,600W and 3,072 Wh. That extra headroom shows in compatibility testing: the Delta Pro Ultra powered 52 of 53 devices versus 47 for the Pecron, earning a higher overall score of 102 to 95.
It also accepts up to 5,600W of solar input, making it a strong fit for whole-home backup paired with a large panel array. The tradeoff is significant, though. The Pecron weighs just 79.4 lbs compared to 182.1 lbs for the Delta Pro Ultra, and it offers 20 ms UPS switchover, a feature the EcoFlow unit lacks entirely.
It also reaches a full solar charge in roughly 5.5 hours versus 8 for its rival.
Overall Winner
Delta Pro Ultra
Powers 52 of 53 tested devices vs 47 for Pecron E3600LFP
Delta Pro Ultra wins overall, but the best pick depends on your use case.
Absolute values shown. Bars are scaled within this comparison for readability.
Each metric is independent. Bar lengths are not comparable across different compare pages.
Delta Pro Ultra: +3,072 Wh (+100.0%).
Delta Pro Ultra: +2,400 W (+66.7%).
Delta Pro Ultra: +5,000 W (+71.4%).
Pecron E3600LFP: -102.7 lbs (56.4% lighter).
Pecron E3600LFP: +300 cycles (+9.4%).
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
Electric Water Heater (50 Gal) Pecron E3600LFP: Voltage mismatch
Well Pump (1 HP) Pecron E3600LFP: Voltage mismatch
Electric Clothes Dryer Pecron E3600LFP: Voltage mismatch
RV Rooftop AC (13,500 BTU) Pecron E3600LFP: Needs soft-start
Pancake Air Compressor (6-Gallon) Pecron E3600LFP: Needs soft-start
These devices have startup surges that exceed both stations.
Central AC (3-Ton)
| Spec | Delta Pro Ultra | Pecron E3600LFP |
|---|---|---|
| Capacity | 6,144 Wh ✓ | 3,072 Wh |
| Running Power | 6,000 W ✓ | 3,600 W |
| Surge Power | 12,000 W ✓ | 7,000 W |
| Weight | 182.1 lbs (82.6 kg) | 79.4 lbs (36.0 kg) ✓ |
| Energy Density | 74.4 Wh/kg | 85.3 Wh/kg ✓ |
| Portability Tier | stationary | heavy |
| Chemistry | LFP | LFP |
| Cycle Life | 3,200 | 3,500 ✓ |
| Expandable | Yes | Yes |
| UPS | No | Yes (20 ms) |
| AC Voltage | 120V/240V | 120V |
Best-case charging profile using compatible solar panels.
MPPT: 80-450V
MPPT: 32-150V
Charge speed comparison
Longer bar = faster charge (inverted scale)
All tested devices grouped by category. Click a category to expand.
| Device | Delta Pro Ultra | Runtime | Pecron E3600LFP | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 51.8h | Safe | 25.9h |
| Central AC (3-Ton) | Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Safe | 5h | Safe | 2.5h |
| Gas Furnace Fan (Blower) | Safe | 4.1h | Safe | 2h |
| Portable AC (12,000 BTU) | Safe | 3.2h | Safe | 1.6h |
| Space Heater (1,500W) | Safe | 2.9h | Safe | 1.4h |
| Window AC (8,000 BTU) | Safe | 6.1h | Safe | 3h |
| Device | Delta Pro Ultra | Runtime | Pecron E3600LFP | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Tight | 0.8h | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 23.9h | Safe | 11.9h |
| Well Pump (1 HP) | Safe | 1.8h | Voltage Fail | N/A |
| Device | Delta Pro Ultra | Runtime | Pecron E3600LFP | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 2.9h | Safe | 1.4h |
| Coffee Maker | Safe | 2.7h | Safe | 1.3h |
| Digital Air Fryer | Safe | 2.5h | Safe | 1.3h |
| Electric Skillet | Safe | 2.9h | Safe | 1.4h |
| Electric Stove (Single Burner) | Safe | 2.4h | Safe | 1.2h |
| Electric Water Kettle | Safe | 2.9h | Safe | 1.4h |
| Instant Pot (6 Qt) | Safe | 2.9h | Safe | 1.5h |
| Microwave Oven (1000W) | Safe | 2.2h | Safe | 1.1h |
| Rice Cooker | Safe | 4.6h | Safe | 2.3h |
| Slow Cooker | Safe | 14.3h | Safe | 7.2h |
| Toaster Oven | Safe | 2.4h | Safe | 1.2h |
As an Amazon Associate, we earn from qualifying purchases. Our methodology
Buyers planning serious home backup or running high-draw appliances should choose the Delta Pro Ultra for its 6,000W output, larger battery, and broader device compatibility. The Pecron E3600LFP makes more sense for mobile setups or users who need a built-in UPS and a unit light enough to reposition solo. Overall, the Delta Pro Ultra wins this matchup on power and coverage, but the Pecron's portability and faster solar charge time give it a clear niche.
Delta Pro Ultra is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Delta Pro Ultra has higher battery capacity (6,144 Wh), which generally supports longer runtime on the same load.
Pecron E3600LFP has the faster best-case solar recharge profile in our panel compatibility test set.
Pecron E3600LFP is lighter at 79.4 lbs vs 182.1 lbs. Pecron E3600LFP is rated heavy for portability.
Delta Pro Ultra powers 52 of 53 tested devices, compared to 47 for Pecron E3600LFP.
Only Pecron E3600LFP has UPS (uninterruptible power supply) mode with a 20ms switchover time, which keeps connected devices running during a power outage without interruption.