WattRunTime.com
Language

Ionic GenBox 1200S Runtime Calculator

Quick answer: the Ionic GenBox 1200S stores 1,382 Wh and delivers up to 1,200 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 10.6 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.

Ionic GenBox 1200S portable power station
Battery capacity1,382 Wh
AC output1,200 W
Surge outputunknown
Battery chemistryLiFePO4
ConfidenceEstimated
Source regionGlobal/general sources
checked2026-08-27
Swipe table sideways
Ionic GenBox 1200S: Key facts
Battery capacity1,382 Wh
Battery chemistryLiFePO4
AC output1,200 W
Surge outputunknown
DC outputunknown
USB-C outputunknown
Solar input400 W
Weight15 kg
ConfidenceEstimated
Lifecycle statusUnknown
Source regionGlobal/general sources
Last verified2026-08-27
Catalog notes (original English)

The 1200S is the wall-standing sibling of the GenBox 1200: same 1200W inverter, a larger 1382Wh pack, and the longest-lived cells in the range at 5000 cycles to 70%. Ionic markets an Eco Smart Cycle mode that it says stretches roughly 6 hours of fridge runtime to about 18; treat that as a duty-cycle claim rather than a capacity increase. Surge and port ceilings are unpublished.

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%6h 24m
Output or startup compatibility is not established		EstimatedCalculator
CPAP without heated humidifier40 W · 100% · AC inverter · Reserve: 15%1d 0h
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
Starlink Mini32 W · 100% · USB-C PD · Reserve: 10%1d 11h
Output or startup compatibility is not established		EstimatedCalculator
Wi-Fi router12 W · 100% · AC inverter · Reserve: 10%3d 19h
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
LED TV100 W · 100% · AC inverter · Reserve: 10%10h 34m
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): 1382 WhContinuous output rating (W): 1200 WSurge output rating (W): n/a
Ionic GenBox 1200S
Estimated runtime17h 37m11h 2m – 21h 53mEstimated runtime: 17h 37m, 11h 2m – 21h 53m
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.

17h 37mEstimated runtime: 17h 37m

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

Conservative11h 2m
Estimated17h 37m
Optimistic21h 53m

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
1382 Wh
Usable energy
1057 Wh
1382 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
17h 37m
1057 Wh / 60 W = 17h 37m
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

17h 37mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
Usable energy1057 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a

Runtime range

Conservative11h 2m
Estimated17h 37m
Optimistic21h 53m

Show your work

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

Usable energy1057 Wh1382 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 runtime17h 37m1057 Wh / 60 W = 17h 37m

Assumptions

  • 1382 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: 1,382 Wh. Size the battery for your measured average load and required hours, including reserve.
  • Tracked output: 1,200 W. Compare both running demand and startup demand before using any runtime estimate.
  • Solar input limit: 400 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: 15 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
  • unknown: Surge output, DC output, USB-C output

Models: Ionic

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

Sources