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Westinghouse iGen400s Runtime Calculator
Quick answer: the Westinghouse iGen400s stores 183.6 Wh and delivers up to 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 1.4 hours. Last source check: 2026-08-21. This is an estimate, not a guarantee.
Battery capacity183.6 Wh
AC output200 W
Surge output400 W
Battery chemistryLithium-Ion (NCM)
ConfidenceVerified
Source regionGlobal/general sources
checked2026-08-21
Swipe table sideways
| Battery capacity | 183.6 Wh |
|---|---|
| Battery chemistry | Lithium-Ion (NCM) |
| AC output | 200 W |
| Surge output | 400 W |
| DC output | 150 W |
| USB-C output | 100 W |
| Solar input | 100 W |
| Weight | 2.51 kg |
| Confidence | Verified |
| Lifecycle status | Unknown |
| Source region | Global/general sources |
| Last verified | 2026-08-21 |
Catalog notes (original English)
The 100W USB-C value is the highest published single-port ceiling, not a sum across the three 30W ports and one 100W port. Product weight converts the official 5.53 lb figure to 2.51 kg. The formal specification's 200W rated / 400W peak pair is stored; the manual's separate 300W intended-use wording is not substituted for either rating.
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
| Device scenario | Planning default | Estimated runtime | Device scenario: Confidence | Models |
|---|---|---|---|---|
| Full-size refrigerator | 500 W · 33% · AC inverter · Reserve: 10% | 51m Exceeds a tracked power limit — do not rely on these hours | Estimated | Calculator |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 3h 19m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 4h 45m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 12h 7m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 1h 24m Within the tracked power limits; compatibility still needs checking | Estimated | 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.
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Power station model
Battery capacity (Wh): 184 WhContinuous output rating (W): 200 WSurge output rating (W): 400 W
Estimated runtime2h 21m1h 28m – 2h 55mEstimated runtime: 2h 21m, 1h 28m – 2h 55m
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.
2h 21mEstimated runtime: 2h 21mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
Conservative1h 28m
Estimated2h 21m
Optimistic2h 55m
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
- 184 Wh
- Usable energy
- 141 Wh
- 184 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
- 2h 21m
- 141 Wh / 60 W = 2h 21m
- 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
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WattRunTime.com
WattRunTime estimate
Estimated runtime
2h 21mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Usable energy141 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative1h 28m
Estimated2h 21m
Optimistic2h 55m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy141 Wh184 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 runtime2h 21m141 Wh / 60 W = 2h 21m
Assumptions
- 184 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
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Planning notes
- Capacity class: 183.6 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 200 W. Compare both running demand and startup demand before using any runtime estimate.
- Solar input limit: 100 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: 2.51 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: —
Models: Westinghouse
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
Westinghouse iGen200s
194 Wh · AC output: 150 W · Confidence: Estimated
Westinghouse iGen160s
155 Wh · AC output: 100 W · Confidence: Estimated
Westinghouse iGen300s
296 Wh · AC output: 300 W · Confidence: Estimated
Sources
- Westinghouse iGen400s product specifications (Official; checked 2026-08-21)
- Westinghouse iGen400s user manual (Official; checked 2026-08-21)