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输出功率与逆变效率是矛盾点：大功率纯正弦波逆变器空载自耗电高，长期插着不用会持续掉电，只给小功率设备供电时反而选低功率机型待机损耗更小

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Unverified功率越大散热风扇噪音越大且待机耗电越高，车内休息/睡眠场景下大功率逆变器空载也会持续耗电导致电瓶亏电，应按实际需求选最小够用功率81% similar Unverified1500W逆变器额定功率可驱动绝大多数小家电，但对持续高功率设备如电热水壶、大功率电吹风等实际使用时间很短，容量会快速耗尽81% similar Unverified额定功率上限不高，不适合接大功率电器如吹风机、电热水壶、卷发棒等，仅适合给小功率数码设备供电81% similar

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