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voltage gauge fine when starts then drops to 0
There are many reasons for the voltage gauge fine when starts then drops to 0 : 1. The starting voltage of the car battery is insufficient . As stated by the owner, the car cannot be started . It is recommended to check whether it is caused by the battery fault or other faults first , and repair it in time after checking the real cause . 2. Charge the battery first, and then check whether the vehicle can be started normally .
The unstable voltage of the vehicle may be caused by the damage of the voltage stabilizer of the generator , or the damage of the internal winding or rectifier diode of the generator . The no-load voltage of the battery in the vehicle is about 13 V , and the load voltage is greater than 11 V (generally 12 V-16 V) . When the load voltage is lower than this, the engine may not start or it may be very difficult to start. After the vehicle is started, the generator starts to generate power . The battery voltage of 12 volt vehicle series should be between 13.5-14.5 , and that of 24 volt vehicle series should be between 27-29V .
It should be noted that do not forget to check the coolant and brake fluid . Most of the reservoirs of these fluids are transparent and clear at a glance. Then turn the ignition key to the on position (instead of starting the engine) , and check whether the instruments and indicators on the instrument panel display normally . Turn on and off the small lights , headlights , meeting lights , fog lights , turn signal lights , fault lights , reverse gear lights and lights in turn . Pay special attention to turn signal lights and lights. These two signal lights are the most important to driving safety , and they should be kept in good condition at all times .
To charge the battery, it must be higher than the voltage of the battery to charge the current into the battery. Practice has proved that the charging current generated by a voltage 1.2 times higher than the rated voltage of the battery is the best, which can not only charge the battery safely and quickly , but also maintain the battery life to the maximum .
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