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头灯充电器疑惑

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Post time: 2022-9-22 08:39:27
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http://www.ifix.net.cn/forum.php ... d=108235&extra=
书接上文,顾客拿过来的头灯和充电器,我仔细看了一下充电器的输出电压为12V,空载实测确实也是12伏,把充电器插入头灯再测量充电器输出电压为2.89V,请问各位师傅,这是什么情况?

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Post time: 2022-9-22 11:17:13
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搞错了吧?这种头灯的充电器是4.2V或5V才对。你拆开头灯看一下充电电池就知道了。
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Post time: 2022-9-22 13:35:05
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猜测适配器老化,带不起负载,用可调电源试试
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Post time: 2022-9-22 15:41:58
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这种头灯里面几乎都是1节18650电池  外部充电器是4.2V的
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