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Dear Customer, Thank you for reaching out! The Jackery Explorer 290 has a pure sine wave inverter with an output of 200W (400W peak). The RoadPro lunch box cooker, which typically draws 15 to 20 amps at 12V, would require approximately 180W to 240W of power (12V × 15A = 180W; 12V × 20A = 240W). Since this exceeds the Explorer 290’s continuous output limit of 200W, we do not recommend using it to power the RoadPro lunch box cooker, as it may overload the system or trigger the protection mode. If you need help finding a more suitable power station, we’d be happy to recommend one! Should you have any further questions, feel free to contact us at [email protected] or +1-888-502-2236 (Weekdays, 9 AM to 5 PM PST). We're always happy to assist! Best regards, Jackery Customer Service Team
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