Unverified90% confidenceDecision RuleTime unknown
电热杯加热功率≥300W才能在3分钟内烧开300ml水，USB供电款普遍≤5W只能保温（55℃左右）无法烧开
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Unverified即热式管道直饮机选购需关注加热功率，功率≥2200W才能保证3秒即热且连续出水温度稳定，功率<1800W的即热机在连续接3杯以上时后段水温明显下降83% similarUnverified加热速度受供电功率制约：USB款(10W左右)将常温水加热到40℃约需5-8分钟，车载/大功率款(60W+)约2-3分钟；宣称'秒热'的多是保温而非从冷水加热83% similarUnverified即热式饮水机加热功率需≥2000W才能保证3秒内出水达标温度，功率＜1500W的即热机型出水会明显变慢或水温不稳81% similarUnverified足浴盆加热功率一般为400-600W，功率越大升温越快但恒温阶段耗电，纯加热款升温至42℃约需15-25分钟，无恒温款会持续降温需勤加热水79% similarUnverified标称功率≥300W的电热蒸饭盒复热15-20分钟可热透，低于200W的加热慢（需30分钟以上）且中心易残温，上班族午休时间紧张建议选300W以上79% similar
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