Short Home Outages
Keeping the fridge, Wi-Fi and phones alive for hours
Goal Zero · Extra large
Goal Zero Yeti Pro 4000
3.99 kWh of storage, 3.6 kW of continuous AC output, listed at $4,000. That works out to $1.00 per watt-hour and 34.5 watt-hours per pound.
3.99 kWh3.6 kW AC115.7 lbLiFePO44,000 cycles
What this unit is for
The heritage outdoor-and-solar brand: long-standing retail presence and a broad ecosystem of lights, fridges and panels rather than headline specs.
Best suited to: Buyers who value the ecosystem, the retail presence and a familiar outdoor brand. Less suited to: Spec-sheet shoppers optimising cost per watt-hour.
Multi-day backup, off-grid and whole-home loads.
Specifications
12 of 19 fields are published by Goal Zero for this model. The rest are shown as “—” and are excluded from rankings rather than estimated.
| Capacity | 3.99 kWh |
|---|---|
| AC output (continuous) | 3.6 kW |
| AC surge | 7.2 kW |
| Power lifting / boost | — |
| Battery chemistry | LiFePO4 |
| Rated cycles | 4,000 |
| Weight | 115.7 lb |
| AC recharge to full | 3 h |
| Max solar input | 3 kW |
| AC outlets | — |
| USB-C ports | — |
| USB-A ports | 3 |
| 12V car port | 1 |
| UPS switchover | — |
| Max expandable capacity | — |
| Warranty | 60 months |
| Noise level | — |
| Ingress protection | — |
| Operating temp (low) | -4 °F |
| List price | $4,000 |
Where these numbers come from. Every figure on this page is taken from Goal Zero’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: goalzero.com/products/yeti-pro-4000-power-station.
Vendor wording for each figure (12)
capacityWh: “3994 Wh(51.2 V, 78 Ah)”acOutputW: “3600 W Continuous, 7200 W Surge”acSurgeW: “7200 W Surge”chemistry: “LiFePO4 (Lithium Iron Phosphate)”cycleLife: “Lifecycles => 4000+ (1C discharge 80% ODC)”weight: “115.7 lbs (52kg)”rechargeAcMinutes: “0-100% in under 3 hours when plugged into the wall”solarInputW: “HPP High Voltage Input: 3000W Max (13.3-150 V, up to 30A)”usbAPorts: “USB-A x 3”carPort: “12 V Auxiliary Power Port: 162 W. 13.5 V DC, 12 A Continuous, 40 A Surge (100 ms)”warrantyMonths: “Warranty : 5 years”operatingTempF: “-4 to 140 F (-20 to 60C)”
Where it ranks
All rankings →Position among all 76 models we track, in each dimension this unit publishes the inputs for.
| Dimension | Rank | Value |
|---|---|---|
| Best value (Wh per dollar) | #59 of 73 | $1.00 |
| Most portable (Wh per pound) | #44 of 74 | 34.5 Wh/lb |
| Most inverter headroom | #65 of 75 | 90 W/100Wh |
| Fastest AC recharge | #5 of 36 | 1.3 kW |
| Highest solar input | #5 of 55 | 3 kW |
| Longest service life | #4 of 65 | 15976 kWh |
| Most output per dollar | #65 of 72 | 0.90 W/$ |
| Best for home backup | #27 of 75 | 63/100 |
| Longest warranty | #49 of 75 | 60 mo |
Who buys this brand, and why
Full Goal Zero profile →Who it is for
- Outdoor-retail shoppers who want to handle the product before buying
- Overlanders, car campers and basecamp users
- Brand-loyal outdoor households, often older than the category average
- Buyers who want lights, fridges and panels from the same brand
What they will pay extra for
- Buying an ecosystem, not a box
- A brand they can buy in a physical store
- Simplicity and ruggedness over feature count
- US support and parts
Honest drawbacks
- Capacity per dollar is generally behind the value brands
- Recharge speeds and solar input can trail the newer competitors
- Generations vary a lot — an older Yeti and a newer one are not comparable
- Line-up has churned, which complicates comparisons across years
Fits these buying scenarios
RV & Van Life
Living and working from a vehicle, on solar and alternator charging
Off-Grid & DIY Solar
Cabins, sheds, job sites and self-built systems
Elsewhere in the Goal Zero range
All Goal Zero models →
Closest rivals by capacity
Other brands’ models nearest in capacity — the units a buyer is most likely to be comparing against this one.
