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USB供电（5V/2A）电热杯本质是恒温保温杯，只能维持40-60℃，不具备加热能力；真正能烧开水的必须是220V直插或独立底座供电

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Unverified供电功率受限于USB口（约5V/0.5-1A），发热温度上限不高，体感为微温而非明显热感86% similar UnverifiedUSB 5V供电功率有限，最高温度约35℃，严寒环境或对保暖要求高的用户不适合，仅适合轻度驱寒场景82% similar UnverifiedUSB充电便携款功率通常仅3-5W，清洗力弱只适合日常轻度油脂；顽固污渍、汗渍结晶需选插电款(功率20-50W)配合温水与专用清洗液78% similar

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