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Renogy Phoenix 300 Runtime Calculator
Quick answer: the Renogy Phoenix 300 stores 337 Wh and delivers up to 300 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 2.6 hours. Last source check: 2026-07-10. This is an estimate, not a guarantee.
Battery capacity337 Wh
AC output300 W
Surge outputunknown
Battery chemistryLi-ion
ConfidenceEstimated
Source regionMixed regional sources
checked2026-07-10
Swipe table sideways
| Battery capacity | 337 Wh |
|---|---|
| Battery chemistry | Li-ion |
| AC output | 300 W |
| Surge output | unknown |
| DC output | unknown |
| USB-C output | 60 W |
| Solar input | unknown |
| Weight | 2.9 kg |
| Confidence | Estimated |
| Lifecycle status | Unknown |
| Source region | Mixed regional sources |
| Last verified | 2026-07-10 |
Catalog notes (original English)
Weight converts the official 6.4 lb value to 2.9 kg. Surge, DC, and solar-input ceilings remain unknown because the checked official sources do not publish them.
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. au.renogy.com: Renogy Phoenix 300 product document
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% | 1h 34m Exceeds a tracked power limit — do not rely on these hours | Estimated | Calculator |
| CPAP without heated humidifier | 40 W · 100% · AC inverter · Reserve: 15% | 6h 5m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| Starlink Mini | 32 W · 100% · USB-C PD · Reserve: 10% | 8h 43m Exceeds a tracked power limit — do not rely on these hours | Estimated | Calculator |
| Wi-Fi router | 12 W · 100% · AC inverter · Reserve: 10% | 22h 15m Within the tracked power limits; compatibility still needs checking | Estimated | Calculator |
| LED TV | 100 W · 100% · AC inverter · Reserve: 10% | 2h 35m 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): 337 WhContinuous output rating (W): 300 WSurge output rating (W): n/a
Estimated runtime4h 18m2h 41m – 5h 20mEstimated runtime: 4h 18m, 2h 41m – 5h 20m
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.
4h 18mEstimated runtime: 4h 18mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
Conservative2h 41m
Estimated4h 18m
Optimistic5h 20m
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
- 337 Wh
- Usable energy
- 258 Wh
- 337 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
- 4h 18m
- 258 Wh / 60 W = 4h 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
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WattRunTime.com
WattRunTime estimate
Estimated runtime
4h 18mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Usable energy258 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative2h 41m
Estimated4h 18m
Optimistic5h 20m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy258 Wh337 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 runtime4h 18m258 Wh / 60 W = 4h 18m
Assumptions
- 337 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: 337 Wh. Size the battery for your measured average load and required hours, including reserve.
- Tracked output: 300 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: 2.9 kg. Check the complete carrying setup, cables and battery extensions before choosing this model for travel.
- unknown: Surge output, DC output, Solar input
Models: Renogy
Compare nearby capacity records from the same brand, then check output, weight and missing fields. A larger battery does not establish device compatibility.
Renogy Phoenix 200
222 Wh · AC output: 200 W · Confidence: Estimated
Renogy Phoenix 500
495 Wh · AC output: 800 W · Confidence: Verified
Renogy Lycan 5000
4,800 Wh · AC output: 3,500 W · Confidence: Estimated
Sources
- Renogy Phoenix 300 product article (Official; checked 2026-07-10)
- Renogy Phoenix 300 product document (Official; checked 2026-07-10)