Capacity
Higher is better | Scale max: 2,048 Wh | DELTA 2 Max leads
DELTA 2 1,024 Wh
DELTA 2 Max 2,048 Wh
DELTA 2 Max: +1,024 Wh (+100.0%).
DELTA 2 vs DELTA 2 Max
1,800W
Running power
2,400W
1,024 Wh
Battery
2,048 Wh
26.5 lbs
Weight
50.7 lbs
At a Glance
This comparison targets buyers deciding between EcoFlow's DELTA 2 and DELTA 2 Max, two LFP-based portable power stations that share the same battery chemistry and 3,000-cycle lifespan but differ significantly in output and capacity. The DELTA 2 Max delivers 2,400W of running power and 4,800W surge from a 2,048 Wh battery, doubling the DELTA 2's 1,024 Wh capacity and exceeding its 1,800W continuous output by a third.
In device compatibility testing across 53 appliances, the Max powered 45 compared to the DELTA 2's 39, giving it a clear edge for home backup and high-draw tools. It also accepts up to 1,000W of solar input versus 500W on the smaller unit.
The tradeoff is weight: at 50.7 lbs, the Max is nearly twice as heavy as the 26.5 lb DELTA 2, which matters for camping, tailgating, or any scenario where you carry your power with you.
Overall Winner
DELTA 2 Max
Powers 45 of 53 tested devices vs 39 for DELTA 2
Home backup: DELTA 2 Max RV / mobile: DELTA 2 Solar: Tie
DELTA 2 Max wins overall, but the best pick depends on your use case.
Choose DELTA 2 if...
- + Portability matters (27 lbs vs 51)
- + You want faster solar recharging
Choose DELTA 2 Max if...
- + 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 2 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 2 2,700 W
DELTA 2 Max 4,800 W
DELTA 2 Max: +2,100 W (+77.8%).
Weight
Lower is better | Scale best: 26.5 lbs | DELTA 2 leads
DELTA 2 26.5 lbs (12.0 kg)
DELTA 2 Max 50.7 lbs (23.0 kg)
DELTA 2: -24.3 lbs (47.8% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
DELTA 2 3,000 cycles
DELTA 2 Max 3,000 cycles
Delta: Tie (0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 6 show a different result between these two stations.
Both can run: 39 · Differences: 11% (6/53) · Neither can run: 8
Only DELTA 2 Max can run 6
Dehumidifier (70 Pint) DELTA 2: Needs soft-start
Portable AC (12,000 BTU) DELTA 2: Needs soft-start
Corded Drill / Hammer Drill DELTA 2: Surge shortfall
Shop Vac (Wet/Dry, 5-6 HP Peak) DELTA 2: Surge shortfall
Sump Pump (1/2 HP) DELTA 2: Needs soft-start
Microwave Oven (1000W) DELTA 2: Running 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 2 | DELTA 2 Max |
|---|---|---|
| Capacity | 1,024 Wh | 2,048 Wh ✓ |
| Running Power | 1,800 W | 2,400 W ✓ |
| Surge Power | 2,700 W | 4,800 W ✓ |
| Weight | 26.5 lbs (12.0 kg) ✓ | 50.7 lbs (23.0 kg) |
| Energy Density | 85.3 Wh/kg | 89.0 Wh/kg ✓ |
| Portability Tier | portable | portable |
| Chemistry | LFP | LFP |
| Cycle Life | 3,000 | 3,000 |
| Expandable | Yes | Yes |
| UPS | No | No |
| AC Voltage | 120V | 120V |
Solar Charging
Best-case charging profile using compatible solar panels.
DELTA 2
Faster Max solar input 500 W
Connector XT60i
Full charge time ~3.7h
Compatible panels 19/20
MPPT: 11-60V
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 2DELTA 2 Max
Emergency(2)
1/22/2
1/2
2/2
| Device | DELTA 2 | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Safe | 4.5h | Safe | 9h |
| Sump Pump (1/2 HP) | Soft Start | 0.6h | 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 2 | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 8.6h | Safe | 17.3h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Soft Start | 0.8h | Safe | 1.7h |
| Gas Furnace Fan (Blower) | Tight | 0.7h | Safe | 1.4h |
| Portable AC (12,000 BTU) | Soft Start | 0.5h | Tight | 1.1h |
| Space Heater (1,500W) | Safe | 0.5h | Safe | 1h |
| Window AC (8,000 BTU) | Safe | 1h | Safe | 2h |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | DELTA 2 | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 4h | 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 2 | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Safe | 0.5h | Safe | 1h |
| Coffee Maker | Safe | 0.4h | Safe | 0.9h |
| Digital Air Fryer | Tight | 0.4h | Safe | 0.8h |
| Electric Skillet | Safe | 0.5h | Safe | 1h |
| Electric Stove (Single Burner) | Tight | 0.4h | Safe | 0.8h |
| Electric Water Kettle | Safe | 0.5h | Safe | 1h |
| Instant Pot (6 Qt) | Safe | 0.5h | Safe | 1h |
| Microwave Oven (1000W) | Fail | N/A | Safe | 0.7h |
| Rice Cooker | Safe | 0.8h | Safe | 1.5h |
| Slow Cooker | Safe | 2.4h | Safe | 4.8h |
| Toaster Oven | Tight | 0.4h | Safe | 0.8h |
Large Appliances(4)
3/43/4
3/4
3/4
| Device | DELTA 2 | Runtime | DELTA 2 Max | Runtime |
|---|---|---|---|---|
| Dishwasher | Tight | 0.4h | Safe | 0.8h |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Safe | 3.5h | Safe | 6.9h |
| Washing Machine | Safe | 0.6h | 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)
0/52/5
0/5
2/5
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The Bottom Line
The DELTA 2 suits buyers who prioritize portability and need a capable 1,800W station for lighter loads, travel, or small-scale solar setups. The DELTA 2 Max is the better fit for home backup, extended off-grid use, or running higher-demand appliances, covering six more devices in our 53-unit test. With a score of 88.5 versus 73.5, the DELTA 2 Max is the recommended pick for most buyers who can manage its added size.
DELTA 2 vs DELTA 2 Max FAQ
Q Which is better for home backup, DELTA 2 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 2 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 2 has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, DELTA 2 or DELTA 2 Max?
DELTA 2 is lighter at 26.5 lbs vs 50.7 lbs. DELTA 2 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 39 for DELTA 2.