288 Wh published capacity. Continuous AC output 300 W, with 600 W listed as surge or boost.The cited user manual prints capacity as 22.5 Ah at 12.8 V DC (288 Wh), AC output as 300 W rated and 600 W surge peak, and that AC line as 230 V, 50 Hz. A 120 V unit can differ in voltage even when the watt rating matches. RunTime uses the watt-hours and the watt ratings, not a guessed US label.
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Cited loads on this station
AC rows use 85% efficiency, a planning assumption, because this page's source does not print an inverter efficiency. DC rows use the full 288 Wh. A cycling load, especially a fridge compressor, will not match a steady watt.
Planning runtimes for Jackery Explorer 300 Plus
Load
Watts
Path
Estimate
Starlink V5, top of the published average
50 W
AC
4 hr 54 min
Starlink Standard 4, top of the published average
100 W
AC
2 hr 27 min
ResMed AirSense 11, typical consumption
56.1 W
AC
4 hr 22 min
Apple 20 W USB-C adapter, rated output
20 W
DC
14 hr 24 min
The manual prints a car port of 12 V at 10 A, which is 120 W, and a USB-C output up to 100 W.