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AFERIY P040 Runtime Calculator
Use this source-linked record to estimate runtime from tracked capacity, output, charging, and weight fields. Unknown specs stay unknown until an official or manufacturer-grade source confirms them.
Capacity256 Wh
AC output400 W
Surge800 W
ChemistryLiFePO4
ConfidenceVerified
Source regionglobal/general
Checked2026-08-21
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| Battery capacity | 256 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| AC output | 400 W |
| Surge output | 800 W |
| DC output | 120 W |
| USB-C output | 100 W |
| Solar input | 120 W |
| Weight | 4 kg |
| Confidence | Verified |
| Lifecycle status | Unknown |
| Source region | global/general |
| Last verified | 2026-08-21 |
This record follows the US 100-120V P040 configuration. The separately published 800W surge ceiling is retained; the nearby sub-10ms UPS transfer time is not treated as another output rating.
Runtime Starting Points
These are formula estimates using the tracked capacity, a 10% reserve, and each scenario's default wattage and duty cycle. They are planning starters, not measured runtimes.
Swipe table sideways
| Scenario | Default load | Estimate | Scenario confidence | Station page |
|---|---|---|---|---|
| Full-size refrigerator | 500 W at 33% | above tracked AC output | Estimated | Use calculator |
| CPAP without heated humidifier | 40 W at 100% | 4h 54m | Estimated | Use calculator |
| Starlink Mini | 32 W at 100% | 6h 29m | Estimated | Use calculator |
| Wi-Fi router | 12 W at 100% | 16h 54m | Estimated | Use calculator |
| LED TV | 100 W at 100% | 1h 58m | Estimated | Use calculator |
Calculator for this station
Adjust watts, duty cycle, reserve, output path, and startup surge with AFERIY P040 prefilled from the source-linked specs above.
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Power station model
Battery capacity (Wh): 256 WhContinuous output rating (W): 400 WSurge output rating (W): 800 W
Estimated runtime3h 16m2h 3m – 4h 3mEstimated runtime: 3h 16m, 2h 3m – 4h 3m
Output path
Estimated runtime
3h 16mEstimated runtime: 3h 16mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.
Conservative2h 3m
Estimated3h 16m
Optimistic4h 3m
Conservative assumes harder conditions; optimistic assumes favorable conditions.
- This is an estimate. Real runtime changes with load, temperature, battery age, AC/DC output, and device behavior.
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
- Rated battery
- 256 Wh
- Usable energy
- 196 Wh
- 256 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
- 3h 16m
- 196 Wh / 60 W = 3h 16m
- 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
Smallest matching record (8h)Jackery Explorer 600 v2
WattRunTime.com
WattRunTime estimate
Estimated runtime
3h 16mThis setup is tight. Reduce load, use DC where possible, or choose a larger station.Usable energy196 Wh
Average load60 W
Fixed station overheadUnknown (not included)
Running watts60 W
Max surgen/a
Runtime range
Conservative2h 3m
Estimated3h 16m
Optimistic4h 3m
Show your work
Rated Wh is reduced by efficiency, reserve, battery health, and temperature before it is divided by average load.
Usable energy196 Wh256 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 runtime3h 16m196 Wh / 60 W = 3h 16m
Assumptions
- 256 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.
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Good fit when
- Capacity is a compact class; use it for small electronics and short essentials rather than high-wattage appliances.
- Tracked AC output is 400 W, so high-draw appliances and tools need careful filtering.
- USB-C output is tracked at laptop-class power, useful for direct DC charging when the device supports it.
- Tracked solar input is 120 W before panel, weather, angle, and controller losses.
Watch out for
- Surge output is tracked, but device startup behavior should still be checked against the actual load.
Related AFERIY Records
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Sources
- AFERIY US P040 product specifications (official; checked 2026-08-21)