为什么一闭合前照灯电流表就指示放电当交流发电机（简称发电机）不工作时，蓄电池是唯一的电源，如果闭合前照灯，电流表指示放电１０Ａ以上是正常的。当发电机正常工作时，白天行驶，也可以向蓄电池充电。当夜间一闭合前照灯，电流表就指示放电，而且时间一长，蓄电池就... Why a closed headlamp ammeter to indicate discharge When the alternator (generator referred to) does not work, the battery is the only power supply, if the headlamp is closed, the ammeter indicates that the discharge of 10A is normal. When the generator is working properly during the day, you can also charge the battery. When closing the headlights at night, the ammeter will indicate the discharge, and over time, the battery will ...