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ECTIVE BlackBox 15 Runtime Calculator

Quick answer: the ECTIVE BlackBox 15 stores 1,497.6 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 11.5 hours. Last source check: 2026-08-27. This is an estimate, not a guarantee.

ECTIVE BlackBox 15 portable power station
Battery capacity1,497.6 Wh
AC output1,500 W
Surge outputunknown
Battery chemistryLiFePO4
ConfidenceEstimated
Source regionRegional source
checked2026-08-27
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ECTIVE BlackBox 15: Key facts
Battery capacity1,497.6 Wh
Battery chemistryLiFePO4
AC output1,500 W
Surge outputunknown
DC outputunknown
USB-C output100 W
Solar input200 W
Weight20 kg
ConfidenceEstimated
Lifecycle statusUnknown
Source regionRegional source
Last verified2026-08-27
Catalog notes (original English)

Surge and DC ceilings stay unknown: the table publishes no peak AC figure and no DC watt limit. ECTIVE publishes one comparison table covering the whole series, so the stored values are the column for this model. ECTIVE is a German brand and this record follows its published 230V configuration.

Regional source note Some specs are cross-checked against official regional pages. Regional SKUs can differ; verify the manufacturer page for your market before purchase or emergency planning. ective.de: ECTIVE BlackBox series official product page

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 57m
Output or startup compatibility is not established		EstimatedCalculator
CPAP without heated humidifier40 W · 100% · AC inverter · Reserve: 15%1d 3h
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
Starlink Mini32 W · 100% · USB-C PD · Reserve: 10%1d 14h
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
Wi-Fi router12 W · 100% · AC inverter · Reserve: 10%4d 2h
Within the tracked power limits; compatibility still needs checking		EstimatedCalculator
LED TV100 W · 100% · AC inverter · Reserve: 10%11h 27m
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): 1498 WhContinuous output rating (W): 1500 WSurge output rating (W): n/a
ECTIVE BlackBox 15
Estimated runtime19h 6m11h 57m – 23h 43mEstimated runtime: 19h 6m, 11h 57m – 23h 43m
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.

19h 6mEstimated runtime: 19h 6m

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

Conservative11h 57m
Estimated19h 6m
Optimistic23h 43m

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
1498 Wh
Usable energy
1146 Wh
1498 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
19h 6m
1146 Wh / 60 W = 19h 6m
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

19h 6mThis setup has comfortable headroom for overnight use, assuming the wattage estimate is realistic.
Usable energy1146 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a

Runtime range

Conservative11h 57m
Estimated19h 6m
Optimistic23h 43m

Show your work

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

Usable energy1146 Wh1498 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 runtime19h 6m1146 Wh / 60 W = 19h 6m

Assumptions

  • 1498 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: 1,497.6 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: 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: 20 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
  • unknown: Surge output, DC output

Models: ECTIVE

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

Sources