Capacity
Higher is better | Scale max: 1,260 Wh | DELTA (Gen 1) leads
DELTA (Gen 1) 1,260 Wh
DELTA 3 Plus 1,024 Wh
DELTA (Gen 1): +236 Wh (+23.0%).
DELTA (Gen 1) vs DELTA 3 Plus
VS
1,800W
Running power
1,800W
1,260 Wh
Battery
1,024 Wh
30.9 lbs
Weight
27.6 lbs
At a Glance
This comparison targets buyers choosing between two similarly rated EcoFlow 1800W portable power stations. The DELTA 3 Plus edges ahead in device compatibility, powering 42 out of 53 tested devices versus 40 for the original DELTA.
Its LFP battery chemistry delivers 4,000 charge cycles, five times the 800-cycle lifespan of the Gen 1's NMC cells. The newer model also accepts up to 1,000W of solar input, cutting full solar charge time to roughly 3.7 hours compared to 4.5 hours at the DELTA's 400W max.
It weighs 3.3 lbs less and supports battery expansion. The tradeoff: the original DELTA holds a larger 1,260 Wh battery versus 1,024 Wh in the DELTA 3 Plus, giving it about 23% more stored energy per charge for extended off-grid use without add-on packs.
Overall Winner
DELTA 3 Plus
Powers 42 of 53 tested devices vs 40 for DELTA (Gen 1)
Home backup: DELTA (Gen 1) RV / mobile: Tie Solar: DELTA 3 Plus
DELTA 3 Plus wins overall, but the best pick depends on your use case.
Choose DELTA (Gen 1) if...
- + You need all-day runtime headroom
Choose DELTA 3 Plus if...
- + Portability matters for your setup
- + You value battery longevity (LFP, 4,000 cycles)
- + You want faster solar recharging
- + You want future battery expansion
- + You want broader device compatibility
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: 1,800 W | Tie
DELTA (Gen 1) 1,800 W
DELTA 3 Plus 1,800 W
Delta: Tie (0%).
Surge Power
Higher is better | Scale max: 3,600 W | DELTA 3 Plus leads
DELTA (Gen 1) 3,300 W
DELTA 3 Plus 3,600 W
DELTA 3 Plus: +300 W (+9.1%).
Weight
Lower is better | Scale best: 27.6 lbs | DELTA 3 Plus leads
DELTA (Gen 1) 30.9 lbs (14.0 kg)
DELTA 3 Plus 27.6 lbs (12.5 kg)
DELTA 3 Plus: -3.3 lbs (10.7% lighter).
Battery Life
Higher is better | Scale max: 4,000 cycles | DELTA 3 Plus leads
DELTA (Gen 1) 800 cycles
DELTA 3 Plus 4,000 cycles
DELTA 3 Plus: +3,200 cycles (+400.0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 2 show a different result between these two stations.
Both can run: 40 · Differences: 4% (2/53) · Neither can run: 11
Neither can run · 11 devices
These devices have startup surges that exceed both stations.
Central AC (3-Ton)
Portable AC (12,000 BTU)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
Microwave Oven (1000W)
Electric Clothes Dryer
RV Rooftop AC (13,500 BTU)
Circular Saw (Corded)
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Shop Vac (Wet/Dry, 5-6 HP Peak)
Full Specs Comparison
| Spec | DELTA (Gen 1) | DELTA 3 Plus |
|---|---|---|
| Capacity | 1,260 Wh ✓ | 1,024 Wh |
| Running Power | 1,800 W | 1,800 W |
| Surge Power | 3,300 W | 3,600 W ✓ |
| Weight | 30.9 lbs (14.0 kg) | 27.6 lbs (12.5 kg) ✓ |
| Energy Density | 90.0 Wh/kg ✓ | 81.9 Wh/kg |
| Portability Tier | portable | portable |
| Chemistry | NMC | LFP |
| Cycle Life | 800 | 4,000 ✓ |
| Expandable | No | Yes |
| UPS | No | No |
| AC Voltage | 120V | 120V |
Solar Charging
Best-case charging profile using compatible solar panels.
DELTA (Gen 1)
Max solar input 400 W
Connector XT60
Full charge time ~4.5h
Compatible panels 19/20
MPPT: 10-65V
DELTA 3 Plus
Faster Max solar input 1,000 W
Connector XT60i
Full charge time ~3.7h
Compatible panels 19/20
MPPT: 11-60V
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 3 Plus
Emergency(2)
1/22/2
1/2
2/2
| Device | DELTA (Gen 1) | Runtime | DELTA 3 Plus | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Safe | 5.5h | Safe | 4.5h |
| Sump Pump (1/2 HP) | Soft Start | 0.8h | Tight | 0.6h |
Entertainment(2)
2/22/2
2/2
2/2
EV & Transportation(2)
2/22/2
2/2
2/2
Heating & Cooling(7)
4/75/7
4/7
5/7
| Device | DELTA (Gen 1) | Runtime | DELTA 3 Plus | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 10.6h | Safe | 8.6h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Soft Start | 1h | Tight | 0.8h |
| Gas Furnace Fan (Blower) | Safe | 0.8h | Safe | 0.7h |
| Portable AC (12,000 BTU) | Soft Start | 0.6h | Soft Start | 0.5h |
| Space Heater (1,500W) | Safe | 0.6h | Safe | 0.5h |
| Window AC (8,000 BTU) | Safe | 1.2h | Safe | 1h |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | DELTA (Gen 1) | Runtime | DELTA 3 Plus | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 4.9h | Safe | 4h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
10/1110/11
10/11
10/11
| Device | DELTA (Gen 1) | Runtime | DELTA 3 Plus | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 0.6h | Safe | 0.5h |
| Coffee Maker | Safe | 0.6h | Safe | 0.4h |
| Digital Air Fryer | Tight | 0.5h | Tight | 0.4h |
| Electric Skillet | Safe | 0.6h | Safe | 0.5h |
| Electric Stove (Single Burner) | Tight | 0.5h | Tight | 0.4h |
| Electric Water Kettle | Safe | 0.6h | Safe | 0.5h |
| Instant Pot (6 Qt) | Safe | 0.6h | Safe | 0.5h |
| Microwave Oven (1000W) | Fail | N/A | Fail | N/A |
| Rice Cooker | Safe | 0.9h | Safe | 0.8h |
| Slow Cooker | Safe | 2.9h | Safe | 2.4h |
| Toaster Oven | Tight | 0.5h | Tight | 0.4h |
Large Appliances(4)
3/43/4
3/4
3/4
| Device | DELTA (Gen 1) | Runtime | DELTA 3 Plus | Runtime |
|---|---|---|---|---|
| Dishwasher | Tight | 0.5h | Tight | 0.4h |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Safe | 4.3h | Safe | 3.5h |
| Washing Machine | Safe | 0.7h | Safe | 0.6h |
Medical(4)
4/44/4
4/4
4/4
Outdoor & RV(6)
5/65/6
5/6
5/6
Personal Care(2)
2/22/2
2/2
2/2
Power Tools(5)
1/51/5
1/5
1/5
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The Bottom Line
The original DELTA suits buyers who prioritize raw battery capacity out of the box and need 1,260 Wh of energy in a single, non-expandable unit. The DELTA 3 Plus is the stronger pick for long-term ownership, faster solar charging, and future expansion. With a higher surge rating of 3,600W, five times the cycle life, and broader device coverage at 42 of 53 loads, the DELTA 3 Plus is the recommended choice.
DELTA (Gen 1) vs DELTA 3 Plus FAQ
Q Which is better for home backup, DELTA (Gen 1) or DELTA 3 Plus?
DELTA 3 Plus 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 3 Plus?
DELTA (Gen 1) has higher battery capacity (1,260 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 (Gen 1) or DELTA 3 Plus?
DELTA 3 Plus is lighter at 27.6 lbs vs 30.9 lbs. DELTA 3 Plus is rated portable for portability.
Q How many devices can each power station run?
DELTA 3 Plus powers 42 of 53 tested devices, compared to 40 for DELTA (Gen 1).
Q Can you expand the battery capacity of DELTA (Gen 1) or DELTA 3 Plus?
Only DELTA 3 Plus supports expansion batteries for additional capacity. DELTA (Gen 1) is limited to its built-in 1,260 Wh.