WattRunTime.com
Language

Arkpax Ark EVO 1800W Runtime Calculator

Quick answer: the Arkpax Ark EVO 1800W stores 1,200 Wh and delivers up to 1,800 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 9.2 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.

Arkpax Ark EVO 1800W portable power station
Battery capacity1,200 Wh
AC output1,800 W
Surge output3,300 W
Battery chemistryLiFePO4
ConfidenceEstimated
Source regionGlobal/general sources
checked2026-08-27
Swipe table sideways
Arkpax Ark EVO 1800W: Key facts
Battery capacity1,200 Wh
Battery chemistryLiFePO4
AC output1,800 W
Surge output3,300 W
DC output120 W
USB-C outputunknown
Solar input800 W
Weight24 kg
ConfidenceEstimated
Lifecycle statusUnknown
Source regionGlobal/general sources
Last verified2026-08-27
Catalog notes (original English)

USB-C stays unknown because the table lists the USB-C row without a watt ceiling for this model.

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.

Swipe table sideways
Runtime estimate
Device scenarioPlanning defaultEstimated runtimeDevice scenario: ConfidenceModels
Full-size refrigerator500 W · 33% · AC inverter · Reserve: 10%5h 34m
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
CPAP without heated humidifier40 W · 100% · AC inverter · Reserve: 15%21h 41m
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
Starlink Mini32 W · 100% · USB-C PD · Reserve: 10%1d 7h
Output or startup compatibility is not established		EstimatedCalculator
Wi-Fi router12 W · 100% · AC inverter · Reserve: 10%3d 7h
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
LED TV100 W · 100% · AC inverter · Reserve: 10%9h 11m
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
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): 1200 WhContinuous output rating (W): 1800 WSurge output rating (W): 3300 W
Arkpax Ark EVO 1800W
Estimated runtime15h 18m9h 35m – 19h 0mEstimated runtime: 15h 18m, 9h 35m – 19h 0m
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.

15h 18mEstimated runtime: 15h 18m

This setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.

Conservative9h 35m
Estimated15h 18m
Optimistic19h 0m

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
1200 Wh
Usable energy
918 Wh
1200 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
15h 18m
918 Wh / 60 W = 15h 18m
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

15h 18mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
Usable energy918 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a

Runtime range

Conservative9h 35m
Estimated15h 18m
Optimistic19h 0m

Show your work

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

Usable energy918 Wh1200 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 runtime15h 18m918 Wh / 60 W = 15h 18m

Assumptions

  • 1200 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: 1,200 Wh. Size the battery for your measured average load and required hours, including reserve.
  • Tracked output: 1,800 W. Compare both running demand and startup demand before using any runtime estimate.
  • Solar input limit: 800 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: 24 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
  • unknown: USB-C output

Models: Arkpax

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

Sources