Goal Zero Yeti PRO 4000 Runtime Calculator
3,994 Wh LiFePO4 · 3,600 W AC (7,200 W surge) · runs a 34 W CPAP with humidifier about 2.6–3.1 days
Specs verified 10 Oct 2026 from goalzero.com
KiloHour is independent and not affiliated with or endorsed by Goal Zero. Goal Zero and product names are trademarks of their respective owners. Images: Goal Zero.
At a glance
What the Yeti PRO 4000 runs
From its 3,600 W AC outlets, 5 of 6 listed devices last their usual hours, the space heater does not.
- Runs it
Fridge 123 W
2.3–2.7 days
123 W running and a 800 W startup peak fit within the Yeti PRO 4000's 3,600 W continuous and 7,200 W surge ratings. Runtime at its 41 W average, as the compressor cycles.
- Runs it
Microwave (1,000 W cooking power) 1500 W
1–2 h
1,500 W running and a 1,500 W startup peak fit within the Yeti PRO 4000's 3,600 W continuous and 7,200 W surge ratings.
- Tight fit
Space heater 1500 W
1–2 h
It runs about 2 h 5 min, short of the 4 h you need.
- Runs it
TV 120 W
22–25 h
120 W running and a 120 W startup peak fit within the Yeti PRO 4000's 3,600 W continuous and 7,200 W surge ratings.
- Runs it
CPAP with humidifier 34 W
2.6–3.1 days
34 W running and a 34 W startup peak fit within the Yeti PRO 4000's 3,600 W continuous and 7,200 W surge ratings.
- Runs it
Wi-Fi router 10 W
5.5–7.1 days
10 W running and a 10 W startup peak fit within the Yeti PRO 4000's 3,600 W continuous and 7,200 W surge ratings.
Spec sheet
Yeti PRO 4000 verified specs
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Our take
What the Yeti PRO 4000 is good at, and what to watch for
KiloHour take Suits home backup through a transfer switch, where 3,600W output and up to 20 kWh of expansion matter, but at 115.7 lb it is portable only on wheels.
The Yeti PRO 4000 is Goal Zero's home-backup model, with 3,994Wh of LiFePO4, 3,600W of continuous output and a 7,200W surge. Goal Zero lists 2,400W for a single standard outlet and 3,600W for the TT-30R outlet and the Power+ port. Paired with Goal Zero's Haven 10 Manual Transfer Switch, it can back up as many as 10 home circuits. Goal Zero says it runs almost any home appliance aside from air conditioning.
Charging and expansion are its strengths. The HPP input accepts solar input of 3,000W at 13.3 to 150V, which Goal Zero says charges it from 0 to 80 percent in under 90 minutes, while AC charging is 1,800W, 0 to 80 percent in 2 hours. Up to four Tank PRO 4000 batteries take it as high as 20 kWh, per Goal Zero, and the user guide lists automatic switching from grid to battery in under 15 ms.
The cost is weight. It weighs 115.7 lb (52.5 kg), or 125.7 lb with its cart, so it is portable only in the wheeled sense. Recharging from a car outlet takes about 37 hours, and the 275W 8mm input is a small second path for solar. Its DC ports include a 100W USB-C port, two 30W USB-C ports, three 18W USB-A ports, a 405W 12V High Power Port and a 162W auxiliary port. Cells are rated for 4,000 cycles with a five-year warranty, and Goal Zero says its app is required.
Sources: goalzero.com, goalzero.com, cdn.shopify.com
Same brand
Other Goal Zero models
| Model | Capacity | AC output | Solar input | Weight |
|---|---|---|---|---|
| Yeti 1500 (2026)Smaller | 1,505 Wh (−2,489 Wh) | 2,000 W | 900 W | 52.75 lb |
| Yeti 1000 (2026)Smaller | 998 Wh (−2,996 Wh) | 2,000 W | 900 W | 35.3 lb |
| Yeti 700Smaller | 677 Wh (−3,317 Wh) | 600 W | 200 W | 20.3 lb |
Alternatives
Other brands near 3,994 Wh
| Model | Capacity | AC output | Solar input | Weight |
|---|---|---|---|---|
| EcoFlow DELTA Pro 3+3% capacity | 4,096 Wh (+102 Wh) | 4,000 W | 2,600 W | 113.54 lb |
| Anker SOLIX F3800-4% capacity | 3,840 Wh (−154 Wh) | 6,000 W | 2,400 W | 132.3 lb |
| Anker SOLIX F3800 Plus-4% capacity | 3,840 Wh (−154 Wh) | 6,000 W | 3,200 W | 136.7 lb |
FAQ
Yeti PRO 4000 questions
Answers use the same published specs and labelled assumptions as the calculator.
How long will the Yeti PRO 4000 last?
3,994 Wh stored, about 3,595 Wh of it usable at the typical estimate. At its full 3,600 W rating it empties in about 49–54 min.
What is the Yeti PRO 4000 solar input?
Up to 3,000 W of panels. A single 200 W panel needs about 5.4 sunny days; panels at the full 3,000 W need about 1.8 peak-sun hours. Panels are assumed to deliver 75% of their rating.
Can the Yeti PRO 4000 run a CPAP overnight?
Yes: 9 nights of 8 hours from a CPAP drawing 34 W with its heated humidifier and tube on (ResMed's measured figure).
How many watts can the Yeti PRO 4000 power?
3,600 W continuous. Motor starts can briefly pull up to 7,200 W.
Does the Yeti PRO 4000 work as a UPS?
Goal Zero lists a 15 ms switchover when wall power drops.