Best power station for an inverter window air conditioner

9 of the 12 records here start and hold this load set and still carry no runtime this page will print — not because of anything a brand did or did not publish, but because Inverter window air conditioner (U-shaped) publishes no duty cycle or modulation curve at all. An inverter compressor throttles its output rather than switching on and off, and no maker of one states the curve it throttles along — so there is no average draw to divide any battery by, for any station here, however completely that station documents its own coefficients. That holds regardless of disclosure quality: the gate sits on the load, not on any brand’s battery documentation, so a station publishing a textbook depth-of-discharge and inverter-efficiency pair would still print nothing on this page.

This page cannot even offer the fallback bound the other pages on this site print. That bound is a nameplate divided by the set’s own average draw, and the average draw is exactly what is missing — with no duty cycle to weight it by, there is nothing to divide any capacity above by, for any row here, cheap or expensive. Every capacity in the ranked list above is still each manufacturer’s own published figure; it is the arithmetic connecting it to a number of hours that cannot be done for this load.

The scope of that finding, stated: as of 2026-08-03 the manufacturer documents behind this load were read in full for a duty cycle or a modulation curve, and none exists in them. That is a statement about this ONE record, not about the 9 stations paired with it here — each of those is judged on its own disclosure everywhere else on this site, and none of them is being marked down for it. This is a statement about published data, not about the hardware — the verdict column judges that separately, and it comes first.

Add a full-size refrigerator to the same set and the first gate does not move: 8 of the 12 still clear it outright, against 8 on the set above. The reason is one instant: a full-size refrigerator asks for 286 W at start-up on its own — 5.2× its own running draw, against 800 W for everything on the list above put together. That start-up figure is a category envelope, not a number this unit’s own manufacturer publishes. The fridge does not move this list. Every machine here that already holds this unit’s conservative running draw has continuous output — and therefore surge headroom — to spare well past the fridge’s own start-up current, which is itself a fraction of what decides the fixed-speed page. Whatever was already too small to run the air conditioner alone stays too small with the fridge added; nothing changes hands. The quiz carries this set as a preset.

start-up figure: Derived from official coefficients · verified 2026-08-01 · low confidence

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