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Goal Zero Yeti 500 Runtime Calculator

Quick answer: the Goal Zero Yeti 500 stores 499.2 Wh and delivers up to 500 W of continuous AC power. Under this site's planning assumptions (85% inverter efficiency, 10% reserve), a steady 100 W AC load runs for roughly 3.8 hours. Last source check: 2026-08-21. This is an estimate, not a guarantee.

Goal Zero Yeti 500 portable power station
Battery capacity499.2 Wh
AC output500 W
Surge output1,000 W
Battery chemistryLiFePO4
ConfidenceVerified
Source regionGlobal/general sources
checked2026-08-21
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Goal Zero Yeti 500: Key facts
Battery capacity499.2 Wh
Battery chemistryLiFePO4
AC output500 W
Surge output1,000 W
DC output182 W
USB-C output100 W
Solar input200 W
Weight7.3 kg
ConfidenceVerified
Lifecycle statusUnknown
Source regionGlobal/general sources
Last verified2026-08-21
Catalog notes (original English)

DC output stores Goal Zero's published 182W combined 12V ceiling, while USB-C stores the highest single 100W PD port. The exact product page replaces the compact-family overview for port-level specs.

Runtime estimate

Formula starting points use each scenario’s default watts, duty cycle and output path, with 10% reserve or 15% for CPAP. Linked detail pages use the same inputs. Hours apply only if the device can run and start; they are not measured runtimes.

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Runtime estimate
Device scenarioPlanning defaultEstimated runtimeDevice scenario: ConfidenceModels
Full-size refrigerator500 W · 33% · AC inverter · Reserve: 10%2h 19m
Exceeds a tracked power limit — do not rely on these hours		EstimatedOpen estimate
CPAP without heated humidifier40 W · 100% · AC inverter · Reserve: 15%9h 1m
Within the tracked power limits; compatibility still needs checking		EstimatedOpen estimate
Starlink Mini32 W · 100% · USB-C PD · Reserve: 10%12h 55m
Within the tracked power limits; compatibility still needs checking		EstimatedOpen estimate
Wi-Fi router12 W · 100% · AC inverter · Reserve: 10%1d 8h
Within the tracked power limits; compatibility still needs checking		EstimatedOpen estimate
LED TV100 W · 100% · AC inverter · Reserve: 10%3h 49m
Within the tracked power limits; compatibility still needs checking		EstimatedOpen estimate
Adjust these assumptions in the runtime calculator

Runtime calculator

Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.

Loading calculatorPreparing calculator
Power station model
Battery capacity (Wh): 499 WhContinuous output rating (W): 500 WSurge output rating (W): 1000 W
Goal Zero Yeti 500
Estimated runtime6h 22m3h 59m – 7h 54mEstimated runtime: 6h 22m, 3h 59m – 7h 54m
Output path

Estimated runtime

Within the tracked power limits; compatibility still needs checking

This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.

6h 22mEstimated runtime: 6h 22m

This setup may cover a partial outage or single overnight session. Add capacity for more margin.

Conservative3h 59m
Estimated6h 22m
Optimistic7h 54m

These are calculated sensitivity cases, not a statistical confidence interval. Conservative uses lower efficiency and battery health, more reserve/temperature loss and higher load; optimistic changes these assumptions in the opposite direction.

  • This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
  • Within the tracked power limits; compatibility still needs checking

Show your work

Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.

Rated battery
499 Wh
Usable energy
382 Wh
499 Wh x 85% x 90% x 100% x 100%
Running watts
60 W
Average load
60 W
Max surge
n/a
Fixed station overhead
Unknown (not included)
60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime
6h 22m
382 Wh / 60 W = 6h 22m
Output path
AC inverter
Efficiency (%)
85
Reserve kept unused (%)
10
Battery health (%)
100
Cold weather loss (%)
0

This link contains the numeric values you entered, but not custom load names.

Source-Backed Next Steps

WattRunTime.com

WattRunTime estimate

Estimated runtime

6h 22mThis setup may cover a partial outage or single overnight session. Add capacity for more margin.
Usable energy382 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a

Runtime range

Conservative3h 59m
Estimated6h 22m
Optimistic7h 54m

Show your work

Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.

Usable energy382 Wh499 Wh x 85% x 90% x 100% x 100%
Fixed station overheadUnknown (not included)60 W / 85% = 70.6 W battery draw; fixed overhead is unknown and excluded
Estimated runtime6h 22m382 Wh / 60 W = 6h 22m

Assumptions

  • 499 Wh nominal battery capacity
  • AC inverter output path
  • 85% conversion efficiency
  • 10% reserve kept unused
  • 60 W average load from 1 load
  • 100% battery health
  • 0% temperature loss
  • Fixed station overhead unknown; not included

Warnings

  • This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior. Runtime is conditional on successful startup, compatible voltage/connectors and sufficient output. Verify the actual device setup before relying on these hours.
  • Within the tracked power limits; compatibility still needs checking

Planning notes

  • Capacity class: 499.2 Wh. Size the battery for your measured average load and required hours, including reserve.
  • Tracked output: 500 W. Compare both running demand and startup demand before using any runtime estimate.
  • Solar input limit: 200 W. Actual refill depends on panel voltage/current compatibility, sunlight, angle and charging losses.

Known data gaps

  • Unverified or missing specifications remain visible. The confidence label describes the station record, not a tested runtime or approval for emergency use.
  • Weight: 7.3 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
  • unknown: —

Models: Goal Zero

Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.

Sources