Goal Zero Yeti PRO 4000: Runtime & Specs

Q: How long will the Goal Zero Yeti PRO 4000 run a refrigerator?

About 2.4 days for a typical ENERGY STAR full-size fridge averaging 58 W, assuming 85% inverter efficiency. Older or larger fridges use more. Try your own numbers.

Q: Can the Goal Zero Yeti PRO 4000 run a microwave?

Yes. A typical 1,000 W microwave pulls about 1,500 W from the outlet, within its 3,600 W continuous output. A full battery gives about 2.3 hours of cooking.

Q: How long does the Goal Zero Yeti PRO 4000 take to charge?

Goal Zero's published charging claim: “0–80% in 2 hr; 0–100% in under 3 hr”. Max AC charging power is 1,800 W. With solar, it accepts up to 3,000 W. With 3,000 W of panels that's roughly 1.8 hours of good sun from empty.

Q: Is the Goal Zero Yeti PRO 4000 expandable?

Yes, up to 19,968 Wh with Goal Zero's extra batteries.

Q: Does the Goal Zero Yeti PRO 4000 work as a UPS?

Goal Zero lists a 15 ms switchover time, so it can keep devices like routers and computers running when the power drops. Check that your specific device tolerates the switch before relying on it for anything critical.

The Goal Zero Yeti PRO 4000 is a 3,994 Wh LiFePO4 power station with 3,600 W of continuous AC output and a 7,200 W surge rating. It runs a typical full-size fridge for about 2.4 days.

Capacity3,994 WhLiFePO4

Output3,600 W7,200 W surge

Solar input3,000 W13.3–150 V

Weight115.7 lbexpands to 19,968 Wh

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How long will the Yeti PRO 4000 run your appliances?

Nonstop runtime for one device at a time, using typical US wattages and 85% inverter efficiency. Devices marked ✕ can't run on this model.

Estimated runtime by appliance for the Goal Zero Yeti PRO 4000
Device	Avg draw	Runtime
LED light bulb	9 W	15.7 days
Phone charging	10 W	15 days
Wi-Fi router + modem	15 W	9.4 days
Laptop	50 W	2.8 days
CPAP + humidifier	30 W	4.7 days
CPAP with heated humidifier + humidifier	60 W	2.4 days
Starlink Standard	90 W	38 hours
TV	100 W	34 hours
Mini fridge	29 W	4.9 days
Refrigerator	58 W	2.4 days
Chest freezer	29 W	4.9 days
Sump pump (1/3 HP)	160 W	21 hours
Sump pump (1/2 HP)	210 W	16 hours
Window AC	225 W	15 hours
Drip coffee maker	1,000 W	3.4 hours
Microwave	1,500 W	2.3 hours
Space heater	750 W	4.5 hours
Well pump	33 W	Needs 240 V

Fridges, freezers, pumps and AC units cycle on and off, so we use their average draw. Want a mix of devices on a schedule? Use the runtime calculator.

What the Yeti PRO 4000 can't power

Well pump (1/2 HP submersible): needs 240 V

Solar charging time

Hours of good sun to charge from empty, assuming panels deliver 75% of their rating.

Panels	Power in	Hours of sun
100 W of panels	75 W	53 hours
200 W of panels	150 W	27 hours
400 W of panels	300 W	13 hours
3,000 W of panels	2,250 W	1.8 hours

Check panel voltage and wiring with the solar charging calculator.

Full specifications

Battery capacity	3,994 Wh
Battery chemistry	LiFePO4 (LFP)
Continuous AC output	3,600 W
Surge (peak) output	7,200 W
Boost mode	None listed
AC voltage	120V
AC outlets	5
USB-C ports	3 (up to 100 W)
USB-A ports	3
12 V car outlet	Yes
Max solar input	3,000 W
Solar voltage range	13.3–150 V
Solar max current	30 A
Max AC charging power	1,800 W
AC charging time (maker claim)	0–80% in 2 hr; 0–100% in under 3 hr
Expandable	Yes, up to 19,968 Wh
UPS / EPS switchover	15 ms
Cycle life	4,000 cycles (to 80%)
Weight	115.7 lb
Warranty	5 years

Notes: 4×20A + 1×TT-30R. APS <15 ms (guide). HPP 30A on product page, 40A in guide; +8mm 275W. Max = 5×3993.6 Wh (+4 Tank PRO 4000; GZ says 'up to 20 kWh'). Cycles to 80%.

Specs from Goal Zero's published documents, as of September 2026. Found an error? Tell us.

Sources

Similar power stations

Questions

How long will the Goal Zero Yeti PRO 4000 run a refrigerator?

About 2.4 days for a typical ENERGY STAR full-size fridge averaging 58 W, assuming 85% inverter efficiency. Older or larger fridges use more. Try your own numbers.

Can the Goal Zero Yeti PRO 4000 run a microwave?

Yes. A typical 1,000 W microwave pulls about 1,500 W from the outlet, within its 3,600 W continuous output. A full battery gives about 2.3 hours of cooking.

How long does the Goal Zero Yeti PRO 4000 take to charge?

Goal Zero's published charging claim: “0–80% in 2 hr; 0–100% in under 3 hr”. Max AC charging power is 1,800 W. With solar, it accepts up to 3,000 W. With 3,000 W of panels that's roughly 1.8 hours of good sun from empty.

Is the Goal Zero Yeti PRO 4000 expandable?

Yes, up to 19,968 Wh with Goal Zero's extra batteries.

Does the Goal Zero Yeti PRO 4000 work as a UPS?

Goal Zero lists a 15 ms switchover time, so it can keep devices like routers and computers running when the power drops. Check that your specific device tolerates the switch before relying on it for anything critical.