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DELTA (Gen 1) vs Yeti Pro 4000

DELTA (Gen 1)

EcoFlow

DELTA (Gen 1)

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VS
Yeti Pro 4000

Goal Zero

Yeti Pro 4000

Check on Amazon Official Site
1,800W
Running power
3,600W
1,260 Wh
Battery
3,993.6 Wh
30.9 lbs
Weight
115.7 lbs

At a Glance

This comparison targets buyers weighing a midsize portable unit against a high-capacity home backup station. The EcoFlow DELTA delivers 1800W of running power with 1260 Wh of capacity in a 30.9 lb package, making it genuinely portable for camping, tailgating, or light emergency use.

The Yeti Pro 4000 operates in a different class entirely: 3600W running power, 3993.6 Wh of capacity, and 7200W surge output let it handle heavy loads like power tools or multiple kitchen appliances. In device compatibility testing across 53 products, the Yeti Pro 4000 powered 47 while the DELTA managed 40.

The Yeti Pro 4000 also uses LFP chemistry rated for 4,000 cycles versus 800 for the DELTA's NMC cells, and it accepts up to 3,000W of solar input for expandable off-grid setups. The tradeoff is weight: at 115.7 lbs, the Yeti Pro 4000 is essentially stationary once placed.

Yeti Pro 4000

Overall Winner

Yeti Pro 4000

Powers 47 of 53 tested devices vs 40 for DELTA (Gen 1)

Home backup: Yeti Pro 4000 RV / mobile: DELTA (Gen 1) Solar: Tie

Yeti Pro 4000 wins overall, but the best pick depends on your use case.

Choose DELTA (Gen 1) if...

  • + Portability matters (31 lbs vs 116)
  • + You want faster solar recharging

Choose Yeti Pro 4000 if...

  • + You value battery longevity (LFP, 4,000 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.

Capacity

Higher is better | Scale max: 3,994 Wh | Yeti Pro 4000 leads
DELTA (Gen 1) 1,260 Wh
Yeti Pro 4000 3,993.6 Wh

Yeti Pro 4000: +2,734 Wh (+217.0%).

Running Power

Higher is better | Scale max: 3,600 W | Yeti Pro 4000 leads
DELTA (Gen 1) 1,800 W
Yeti Pro 4000 3,600 W

Yeti Pro 4000: +1,800 W (+100.0%).

Surge Power

Higher is better | Scale max: 7,200 W | Yeti Pro 4000 leads
DELTA (Gen 1) 3,300 W
Yeti Pro 4000 7,200 W

Yeti Pro 4000: +3,900 W (+118.2%).

Weight

Lower is better | Scale best: 30.9 lbs | DELTA (Gen 1) leads
DELTA (Gen 1) 30.9 lbs (14.0 kg)
Yeti Pro 4000 115.7 lbs (52.5 kg)

DELTA (Gen 1): -84.9 lbs (73.3% lighter).

Battery Life

Higher is better | Scale max: 4,000 cycles | Yeti Pro 4000 leads
DELTA (Gen 1) 800 cycles
Yeti Pro 4000 4,000 cycles

Yeti Pro 4000: +3,200 cycles (+400.0%).

Where Compatibility Actually Differs

Out of 53 devices tested, 7 show a different result between these two stations.

Same result: 87%

Both can run: 40 · Differences: 13% (7/53) · Neither can run: 6

Only Yeti Pro 4000 can run 7

Circular Saw (Corded) DELTA (Gen 1): Surge shortfall

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Electric Chainsaw (14-inch) DELTA (Gen 1): Surge shortfall

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Shop Vac (Wet/Dry, 5-6 HP Peak) DELTA (Gen 1): Surge shortfall

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Dehumidifier (70 Pint) DELTA (Gen 1): Needs soft-start

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Portable AC (12,000 BTU) DELTA (Gen 1): Needs soft-start

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Sump Pump (1/2 HP) DELTA (Gen 1): Needs soft-start

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Microwave Oven (1000W) DELTA (Gen 1): Running shortfall

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Neither can run · 6 devices

These are 240V or high-voltage devices — neither station supports them.

Pancake Air Compressor (6-Gallon)

Central AC (3-Ton)

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) Yeti Pro 4000
Capacity 1,260 Wh 3,993.6 Wh ✓
Running Power 1,800 W 3,600 W ✓
Surge Power 3,300 W 7,200 W ✓
Weight 30.9 lbs (14.0 kg) ✓ 115.7 lbs (52.5 kg)
Energy Density 90.0 Wh/kg ✓ 76.1 Wh/kg
Portability Tier portable stationary
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)

Faster
Max solar input 400 W
Connector XT60
Full charge time ~4.5h
Compatible panels 19/20

MPPT: 10-65V

Yeti Pro 4000

Max solar input 3,000 W
Connector Proprietary + DC7909
Full charge time ~14.3h
Compatible panels 20/20

MPPT: 13.3-145V

Charge speed comparison

~4.5h
~14.3h

Longer bar = faster charge (inverted scale)

Device Compatibility

All tested devices grouped by category. Click a category to expand.

DELTA (Gen 1)Yeti Pro 4000

Emergency(2)

1/2
2/2
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Full-Size Freezer (15-17 Cu. Ft.)Safe5.5hSafe17.5h
Sump Pump (1/2 HP)Soft Start0.8hSafe2.5h

Entertainment(2)

2/2
2/2
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Desktop PC (Gaming/Workstation)Safe0.9hSafe2.8h
TelevisionSafe5.2hSafe16.4h

EV & Transportation(2)

2/2
2/2
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
E-Bike Battery ChargerSafe4.4hSafe14h
EV Charger (Level 1, 120V)Safe0.6hSafe1.9h

Heating & Cooling(7)

4/7
6/7
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Box Fan (20-inch)Safe10.6hSafe33.7h
Central AC (3-Ton)Voltage FailN/AVoltage FailN/A
Dehumidifier (70 Pint)Soft Start1hSafe3.3h
Gas Furnace Fan (Blower)Safe0.8hSafe2.6h
Portable AC (12,000 BTU)Soft Start0.6hSafe2.1h
Space Heater (1,500W)Safe0.6hSafe1.9h
Window AC (8,000 BTU)Safe1.2hSafe3.9h

Home Infrastructure(3)

1/3
1/3
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Electric Water Heater (50 Gal)Voltage FailN/AVoltage FailN/A
Garage Door Opener (Residential)Safe4.9hSafe15.5h
Well Pump (1 HP)Voltage FailN/AVoltage FailN/A

Kitchen Appliances(11)

10/11
11/11
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
2-Slice Bread ToasterSafe0.6hSafe1.9h
Coffee MakerSafe0.6hSafe1.7h
Digital Air FryerTight0.5hSafe1.6h
Electric SkilletSafe0.6hSafe1.9h
Electric Stove (Single Burner)Tight0.5hSafe1.6h
Electric Water KettleSafe0.6hSafe1.9h
Instant Pot (6 Qt)Safe0.6hSafe1.9h
Microwave Oven (1000W)FailN/ASafe1.5h
Rice CookerSafe0.9hSafe3h
Slow CookerSafe2.9hSafe9.3h
Toaster OvenTight0.5hSafe1.6h

Large Appliances(4)

3/4
3/4
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
DishwasherTight0.5hSafe1.6h
Electric Clothes DryerVoltage FailN/AVoltage FailN/A
French Door RefrigeratorSafe4.3hSafe13.5h
Washing MachineSafe0.7hSafe2.2h

Medical(4)

4/4
4/4
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
CPAP MachineSafe15.7hSafe49.8h
Electric Wheelchair ChargerSafe2.6hSafe8.2h
Medical Nebulizer MachineSafe8hSafe25.4h
Portable Oxygen ConcentratorSafe2.5hSafe8h

Outdoor & RV(6)

5/6
5/6
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Pellet GrillSafe9.2hSafe29.1h
Portable Electric CoolerSafe14.7hSafe46.6h
Portable FanSafe14.5hSafe45.8h
Portable Ice Maker (Countertop)Safe2.5hSafe7.8h
Portable ProjectorSafe4.4hSafe14h
RV Rooftop AC (13,500 BTU)FailN/ASoft Start1.6h

Personal Care(2)

2/2
2/2
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Electric BlanketSafe4.9hSafe15.5h
Professional Hair DryerTight0.5hSafe1.6h

Power Tools(5)

1/5
4/5
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
Circular Saw (Corded)FailN/ASafe1.6h
Corded Drill / Hammer DrillTight0.8hSafe2.6h
Electric Chainsaw (14-inch)FailN/ASafe1.6h
Pancake Air Compressor (6-Gallon)FailN/ASoft Start1.7h
Shop Vac (Wet/Dry, 5-6 HP Peak)FailN/ASafe2h

Work from Home(5)

5/5
5/5
DeviceDELTA (Gen 1)RuntimeYeti Pro 4000Runtime
LaptopSafe2.5hSafe7.8h
Laser PrinterSafe1.2hSafe3.9h
Monitor (27-inch LCD)Safe16hSafe50.8h
Starlink SystemSafe8.8hSafe28h
WiFi RouterSafe11.8hSafe37.3h

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The Bottom Line

The DELTA suits solo travelers or occasional campers who need a unit light enough to carry at 30.9 lbs and just want to keep phones, laptops, and small appliances running. The Yeti Pro 4000 is the better fit for homeowners seeking serious backup power, extended off-grid capability, or whole-circuit coverage with expansion options. With a score of 95 versus 75.5 for the DELTA, the Yeti Pro 4000 is the clear winner for anyone whose priority is capacity and device coverage over portability.

DELTA (Gen 1) vs Yeti Pro 4000 FAQ

Q Which is better for home backup, DELTA (Gen 1) or Yeti Pro 4000?

Yeti Pro 4000 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 Yeti Pro 4000?

Yeti Pro 4000 has higher battery capacity (3,993.6 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 Yeti Pro 4000?

DELTA (Gen 1) is lighter at 30.9 lbs vs 115.7 lbs. DELTA (Gen 1) is rated portable for portability.

Q How many devices can each power station run?

Yeti Pro 4000 powers 47 of 53 tested devices, compared to 40 for DELTA (Gen 1).

Q Can you expand the battery capacity of DELTA (Gen 1) or Yeti Pro 4000?

Only Yeti Pro 4000 supports expansion batteries for additional capacity. DELTA (Gen 1) is limited to its built-in 1,260 Wh.