Goal Zero Yeti Pro 4000

Goal Zero · model 37500

Power Station · Battery (LiFePO4)

Goal Zero Yeti Pro 4000

~$3,399approx. list price

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  1. 800 WLights, phones, router, a CPAP
  2. 2,200 WFridge, freezer and the essentials
  3. 4,000 WFurnace blower, sump pump or a window AC
  4. 7,500 WWell pump or a small central AC
  5. 18,000 WWhole home with central air

3,600 W running, 7,200 W surge — sustains the fridge, freezer and the essentials tier and everything below it.

Best forOverlanders and cabin owners who prioritize ruggedness and solar speed over per-kWh price.

Goal Zero's 6th-gen flagship, built like outdoor equipment rather than consumer electronics: aluminum housing, magnetic port covers that snap shut against dust and rain, and UL2743 certification for outdoor portable use. 3,994Wh with 3,600W output (7,200W surge), 3,000W of solar input, and expansion via Tank Pro batteries to roughly 20kWh. It pairs with Goal Zero's Haven 10 transfer switch for 10-circuit home backup. The downsides: it's expensive per kWh versus EcoFlow and Anker, Tank Pro expansion batteries cost more than competitors' packs, there's no 240V from a single unit, and Goal Zero's app - historically the brand's weak spot - is improved but still behind EcoFlow's.

From the spec sheet

Specifications

Battery capacity
3,994 Wh
Expandable to
20,000 Wh
Continuous output
3,600 W
Surge output
7,200 W
Runtime
Fridge (~150W): ~23 hrs on base unit
Type
Power Station
Fuel
Battery (LiFePO4)
Outlets
4x 120V 20A AC, 1x 30A TT-30 RV, 3x USB-C (1x 100W), 3x USB-A, 12V
Transfer-switch ready
Yes
Weight
115.7 lbs
Warranty
5-year
Model
37500

Aluminum outdoor-rated build·3,000W solar input·Haven 10 transfer-switch pairing

At a glance

Strengths

  • +Best-in-class build: aluminum shell, magnetic port covers, UL2743 outdoor rating
  • +3,000W solar input - full recharge in under 2 hours of good sun
  • +Haven 10 transfer switch enables clean 10-circuit home backup
  • +30A RV port plus 405W 12V high-power port for camper builds

At a glance

Drawbacks

  • −Priced well above equivalent EcoFlow/Anker capacity
  • −No 240V output from a single unit
  • −Tank Pro expansion batteries are expensive per kWh
  • −App still trails EcoFlow in features and polish
  • −115.7 lbs, though it ships with a removable wheeled cart and handle

Head to head

Compare the Goal Zero Yeti Pro 4000

vs EcoFlow DELTA Pro Ultravs Jackery Explorer 5000 Plus

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Goal Zero Yeti 1500
~$1,499

Power Station · Battery (LiFePO4)

Goal Zero Yeti 1500

2,000 W / 3,600 W surge · up to lights, phones, router, a CPAP

capacity
1,505 Wh

Best for Campers, vanlifers and renters who want a weather-rated 1.5 kWh unit with a long warranty and are fine paying a premium for the brand.

Full spec sheetCheck price on Amazon
Jackery Explorer 5000 Plus
~$2,999

Power Station · Battery (LiFePO4)

Jackery Explorer 5000 Plus

7,200 W / 14,400 W surge · up to furnace blower, sump pump or a window AC

capacity
5,040 Wh
expands to
60,000 Wh
Transfer switch
transfer-switch ready

Best for Whole-home backup on a semi-portable budget - well pumps, 240V appliances, and multi-day outages.

Full spec sheetCheck price on Amazon
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