Inergy Flex Tactical 1500 Runtime Calculator

Quick answer: the Inergy Flex Tactical 1500 stores 1,058 Wh and delivers up to 1,500 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 8.1 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.

Inergy Flex Tactical 1500 portable power station
Battery capacity1,058 Wh
AC output1,500 W
Surge output3,000 W
Battery chemistryLi-ion NMC
ConfidenceEstimated
Source regionGlobal/general sources
checked2026-08-27
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Inergy Flex Tactical 1500: Key facts
Battery capacity1,058 Wh
Battery chemistryLi-ion NMC
AC output1,500 W
Surge output3,000 W
DC outputunknown
USB-C output65 W
Solar inputunknown
Weight18.6 kg
ConfidenceEstimated
Lifecycle statusUnknown
Source regionGlobal/general sources
Last verified2026-08-27
Catalog notes (original English)

DC and solar ceilings stay unknown because the table publishes current limits rather than watt limits.

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%4h 54m
Within the tracked power limits; compatibility still needs checking
EstimatedCalculator
CPAP without heated humidifier40 W · 100% · AC inverter · Reserve: 15%19h 7m
Within the tracked power limits; compatibility still needs checking
EstimatedCalculator
Starlink Mini32 W · 100% · USB-C PD · Reserve: 10%1d 3h
Exceeds a tracked power limit — do not rely on these hours
EstimatedCalculator
Wi-Fi router12 W · 100% · AC inverter · Reserve: 10%2d 21h
Within the tracked power limits; compatibility still needs checking
EstimatedCalculator
LED TV100 W · 100% · AC inverter · Reserve: 10%8h 6m
Within the tracked power limits; compatibility still needs checking
EstimatedCalculator

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): 1058 WhContinuous output rating (W): 1500 WSurge output rating (W): 3000 W
Inergy Flex Tactical 1500
Estimated runtime13h 29m8h 27m – 16h 45mEstimated runtime: 13h 29m, 8h 27m – 16h 45m
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.

13h 29mEstimated runtime: 13h 29m

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

Conservative8h 27m
Estimated13h 29m
Optimistic16h 45m

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
1058 Wh
Usable energy
809 Wh
1058 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
13h 29m
809 Wh / 60 W = 13h 29m
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

Planning notes

  • Capacity class: 1,058 Wh. Size the battery for your measured average load and required hours, including reserve.
  • Tracked output: 1,500 W. Compare both running demand and startup demand before using any runtime estimate.
  • Solar input limit: unknown. 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: 18.6 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
  • unknown: DC output, Solar input

Models: Inergy

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

Inergy Kodiak

1,100 Wh · AC output: 1,500 W · Confidence: Estimated

Inergy APEX

1,100 Wh · AC output: 1,500 W · Confidence: Estimated

Sources