用充电速度快的手机充电头给小额充电器手机电池充电时,手机充电头可以根据具体情况自行调节电压,按手机安全范围内的电流进行冲电。通常情况下是不会损害手机和电池的。用功率小的,能给手机充进去电,但是达不到理想的冲电效率。更比较严重的是,在给支持功率大的的手机电池充电的环节中,手机充电头需要持续保持满负荷工作。这样就容易出现手机充电头发烫的情况,不仅对手机充电头造成损害,也会加快手机上电池老化速率,甚至存在安全隐患。
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