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voltage gauge reading at 14
If the voltage gauge reading at 14 volts, what is the meaning?
High voltage of automobile battery will affect driving safety : 1. In general , the voltage of the car's 12V battery should be about 12.8V (plus or minus 0.3V) in the flameout state . If the voltage is lower than 12.5V , it is necessary to supplement the power in time . The 13.7V of the subject should not be possible, unless it is the virtual voltage detected just after the flameout. Check it after a few minutes or turning on the headlights for a few seconds, or it is necessary to verify whether the detection instrument is accurate ; 2. For maintenance free batteries , the normal voltage is between 12 V and 14.1 V ; 3. For lead-acid batteries , the normal voltage is between 12 volts and 14.7 volts. Even in the flameout state , as long as the voltmeter you use is OK and the measured voltage is within the above range , there is no problem .
The voltage of on-board battery shall not exceed 15V, which is generally considered normal . Because to charge the 12V battery, the output voltage of the charger must be greater than 12V . At present, the charging voltage of the battery is about 1.2 times of the rated voltage of the battery, so the full voltage of the battery is 12v x 1 2 = 14.4V up and down . Due to the discreteness of generator products, some engines may be slightly higher, but they should not exceed too much, otherwise the battery will be damaged, so it is generally not more than 15V .
The influence of automobile voltage on the machine. Low voltage (10% lower than the normal voltage) is easy to cause difficulty in starting and even can not work normally . High voltage of automobile for a long time (15% higher than the normal voltage) is easy to shorten the service life of electrical parts on the machine, such as switch, ignition plug, motor, etc., so the voltage should be adjusted to the normal range .
To sum up , the normal voltage of the car is about 14V. So you can drive safely . The voltmeter indicates the voltage value of the electrical system of the whole vehicle. When the generator works, it should be 14V. It is abnormal to be too high or too low (in the red area).
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