Capacity
Higher is better | Scale max: 2,048 Wh | DELTA 2 Max leads
DELTA (Gen 1) 1,260 Wh
DELTA 2 Max 2,048 Wh
DELTA 2 Max: +788 Wh (+62.5%).
DELTA (Gen 1) vs DELTA 2 Max
VS
1,800W
Running power
2,400W
1,260 Wh
Battery
2,048 Wh
30.9 lbs
Weight
50.7 lbs
At a Glance
This comparison targets buyers weighing two EcoFlow DELTA-series stations that sit at different capability tiers. The DELTA 2 Max delivers 2400W of running power and 2048 Wh of LFP battery capacity, while the original DELTA (Gen 1) offers 1800W and 1260 Wh from an NMC pack.
That chemistry difference matters: the DELTA 2 Max is rated for 3000 charge cycles versus 800 for the Gen 1, giving it roughly 3.75 times the expected lifespan. Expandable battery support on the DELTA 2 Max adds flexibility for extended home backup scenarios, and its 1000W solar input ceiling cuts relative dependency on wall charging.
In device compatibility testing across 53 appliances, the DELTA 2 Max powered 45 while the Gen 1 handled 40. The tradeoff is weight: at 50.7 lbs the DELTA 2 Max is nearly 20 lbs heavier, making the 30.9 lb Gen 1 noticeably easier to grab for car camping or tailgating.
Overall Winner
DELTA 2 Max
Powers 45 of 53 tested devices vs 40 for DELTA (Gen 1)
Home backup: DELTA 2 Max RV / mobile: DELTA (Gen 1) Solar: Tie
DELTA 2 Max wins overall, but the best pick depends on your use case.
Choose DELTA (Gen 1) if...
- + Portability matters (31 lbs vs 51)
- + You want faster solar recharging
Choose DELTA 2 Max if...
- + You value battery longevity (LFP, 3,000 cycles)
- + 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: 2,400 W | DELTA 2 Max leads
DELTA (Gen 1) 1,800 W
DELTA 2 Max 2,400 W
DELTA 2 Max: +600 W (+33.3%).
Surge Power
Higher is better | Scale max: 4,800 W | DELTA 2 Max leads
DELTA (Gen 1) 3,300 W
DELTA 2 Max 4,800 W
DELTA 2 Max: +1,500 W (+45.5%).
Weight
Lower is better | Scale best: 30.9 lbs | DELTA (Gen 1) leads
DELTA (Gen 1) 30.9 lbs (14.0 kg)
DELTA 2 Max 50.7 lbs (23.0 kg)
DELTA (Gen 1): -19.8 lbs (39.1% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | DELTA 2 Max leads
DELTA (Gen 1) 800 cycles
DELTA 2 Max 3,000 cycles
DELTA 2 Max: +2,200 cycles (+275.0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 5 show a different result between these two stations.
Both can run: 40 · Differences: 9% (5/53) · Neither can run: 8
Only DELTA 2 Max can run 5
Dehumidifier (70 Pint) DELTA (Gen 1): Needs soft-start
Portable AC (12,000 BTU) DELTA (Gen 1): Needs soft-start
Sump Pump (1/2 HP) DELTA (Gen 1): Needs soft-start
Microwave Oven (1000W) DELTA (Gen 1): Running shortfall
Shop Vac (Wet/Dry, 5-6 HP Peak) DELTA (Gen 1): Surge shortfall
Neither can run · 8 devices
These are 240V or high-voltage devices — neither station supports them.
Central AC (3-Ton)
Circular Saw (Corded)
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
Electric Clothes Dryer
RV Rooftop AC (13,500 BTU)
Full Specs Comparison
| Spec | DELTA (Gen 1) | DELTA 2 Max |
|---|---|---|
| Capacity | 1,260 Wh | 2,048 Wh ✓ |
| Running Power | 1,800 W | 2,400 W ✓ |
| Surge Power | 3,300 W | 4,800 W ✓ |
| Weight | 30.9 lbs (14.0 kg) ✓ | 50.7 lbs (23.0 kg) |
| Energy Density | 90.0 Wh/kg ✓ | 89.0 Wh/kg |
| Portability Tier | portable | portable |
| Chemistry | NMC | LFP |
| Cycle Life | 800 | 3,000 ✓ |
| Expandable | No | Yes |
| UPS | No | No |
| AC Voltage | 120V | 120V |
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 2 Max
Max solar input 1,000 W
Connector XT60i
Full charge time ~7.3h
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 2 Max
Emergency(2)
1/22/2
1/2
2/2
| Device | DELTA (Gen 1) | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Safe | 5.5h | Safe | 9h |
| Sump Pump (1/2 HP) | Soft Start | 0.8h | Safe | 1.3h |
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 2 Max | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 10.6h | Safe | 17.3h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Soft Start | 1h | Safe | 1.7h |
| Gas Furnace Fan (Blower) | Safe | 0.8h | Safe | 1.4h |
| Portable AC (12,000 BTU) | Soft Start | 0.6h | Tight | 1.1h |
| Space Heater (1,500W) | Safe | 0.6h | Safe | 1h |
| Window AC (8,000 BTU) | Safe | 1.2h | Safe | 2h |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | DELTA (Gen 1) | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 4.9h | Safe | 8h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
10/1111/11
10/11
11/11
| Device | DELTA (Gen 1) | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 0.6h | Safe | 1h |
| Coffee Maker | Safe | 0.6h | Safe | 0.9h |
| Digital Air Fryer | Tight | 0.5h | Safe | 0.8h |
| Electric Skillet | Safe | 0.6h | Safe | 1h |
| Electric Stove (Single Burner) | Tight | 0.5h | Safe | 0.8h |
| Electric Water Kettle | Safe | 0.6h | Safe | 1h |
| Instant Pot (6 Qt) | Safe | 0.6h | Safe | 1h |
| Microwave Oven (1000W) | Fail | N/A | Safe | 0.7h |
| Rice Cooker | Safe | 0.9h | Safe | 1.5h |
| Slow Cooker | Safe | 2.9h | Safe | 4.8h |
| Toaster Oven | Tight | 0.5h | Safe | 0.8h |
Large Appliances(4)
3/43/4
3/4
3/4
| Device | DELTA (Gen 1) | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Dishwasher | Tight | 0.5h | Safe | 0.8h |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Safe | 4.3h | Safe | 6.9h |
| Washing Machine | Safe | 0.7h | Safe | 1.1h |
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)
1/52/5
1/5
2/5
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The Bottom Line
The DELTA (Gen 1) suits buyers who prioritize portability and need a lighter unit for mobile use where 1800W and 1260 Wh are sufficient. The DELTA 2 Max is the stronger pick for home backup, solar-heavy setups, and anyone running higher-draw appliances, thanks to its larger capacity, higher output, and far longer cycle life. With a score of 88.5 versus 75.5, the DELTA 2 Max earns the clear recommendation here.
DELTA (Gen 1) vs DELTA 2 Max FAQ
Q Which is better for home backup, DELTA (Gen 1) or DELTA 2 Max?
DELTA 2 Max 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 2 Max?
DELTA 2 Max has higher battery capacity (2,048 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 2 Max?
DELTA (Gen 1) is lighter at 30.9 lbs vs 50.7 lbs. DELTA (Gen 1) is rated portable for portability.
Q How many devices can each power station run?
DELTA 2 Max powers 45 of 53 tested devices, compared to 40 for DELTA (Gen 1).
Q Can you expand the battery capacity of DELTA (Gen 1) or DELTA 2 Max?
Only DELTA 2 Max supports expansion batteries for additional capacity. DELTA (Gen 1) is limited to its built-in 1,260 Wh.