Runtime evidence · sourced load
A camping fan draws 20 W while running. 78 stations clear the capacity, inverter, and startup checks at that load.
01 · Runtime ladder
Nominal capacity × depth of discharge × inverter efficiency ÷ sourced average draw.
| Capacity class | Estimated runtime | Evidence |
|---|---|---|
| 300 Whstep 1 | 11.5 hr | Portable fan (10-inch) load · 2026-07-06 |
| 500 Whstep 2 | 19.1 hr | Portable fan (10-inch) load · 2026-07-06 |
| 1,000 Whstep 3 | 38.3 hr | Portable fan (10-inch) load · 2026-07-06 |
| 2,000 Whstep 4 | 76.5 hr | Portable fan (10-inch) load · 2026-07-06 |
These are comparison projections, not a promise. Temperature, inverter behavior, cycling, and the individual station's measured delivered capacity can change real runtime.
03 · Passing stations
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Lightweight fit
Why it fits
3.5 kg, 11.5 kg below the 15 kg preferred limit
Main compromise
1.4 kg heavier than the lightest eligible model (77 of 78 eligible models have this sourced value)
Best all-round fit
Why it fits
71.1 BatteryRank score — the highest of any station that fits this plan
Main compromise
8.6 points below the highest-scoring eligible model (76 of 78 eligible models have this sourced value)
Longer off-grid stay
Why it fits
97.5 projected runtime hours
Main compromise
1,469.2 hours less projected runtime than the longest-running eligible model across 78 eligible models
This ordered data view is separate from the three recommended buying strategies above.
Runtime uses each linked model's sourced capacity and output data; open its dossier for provenance.
Solar effect
Computed with this model's sourced solar-input limit and BatteryRank's published harvest assumptions. Check the solar method → · Model sources →
04 · Evidence record