# Is 15v too high for a car battery?

Contents

## What voltage is too high for car battery?

Car Battery Voltage Too High When Running

If the voltage on your voltmeter is between 12.4 and 12.8, your battery is in good health. But if the voltage is more than 12.9 volts, it is a sign that your battery has excessive voltage, which can be a daunting situation for you.

## Is 15.5 V too high?

Yes, that’s definitely too high. The peak you should ever see is about 14.2 – 14.4.

## Is 15.3 volts too high?

Normal charging voltage, at idle can run to 15.3 volts. Normally, it should be around 14 volts. If you suspect a bad ground, meter between the battery neg (place meter pos lead here) and the alternator frame. A bad ground will produce a voltage drop and a reading on the battery.

## Can you charge a 12V battery at 15V?

A: A 12V car battery can be safely charged over a range of voltages. … So alternator voltages and car battery chargers voltages can go over 15V safely, as long as the battery is monitored to make sure that it isn’t overcharged. These higher voltages allow the battery to be charged faster.

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## Is 14.8 volts too high for alternator?

To fully charge in reasonable times, alternator output must be 14.2 V to 14.5 V as measured right across the battery posts. … 14.8 would start to be a worry (there might be liquid or corrosion on the battery) and 15 volts would be a real concern, but 14.6 is fine. Less than 14.3 would be a “weak” alternator or regulator.

## Is 16 volts too high?

For some alternators, it’s normal to see as low as 13 volts. For some, a constant 13.6 volts is an indication of a problem. For others, it’s normal to see as high as 16 volts for long stretches. Still, it’s perfectly normal for others to see the alternator not charge at all intermittently.

## Is 15v to high for an alternator?

So, to answer your question, Yes, 15 volts is too high. Most car alternators, that normally recharge your battery after every start, and provide power while the engine is running, are normally voltage regulated to about 13.8 to 14.0 volts.

## Is 14 volts good for a car battery?

It should read close to 12.6 volts when the car is off. … If the voltmeter reads between 14-15 volts then the battery is normal. But if the battery reads over 15 volts or less than 13 volts, then there might be a problem with the voltage regulator, the wiring or the alternator.

## Is 13 volts good for a car battery?

Check the reading. A fully charged battery will typically display a voltmeter reading of about 12.6 to 12.8 volts. If your voltmeter is showing a voltage anywhere between 12.4 and 12.8, that means your battery is in good shape. Any voltage above 12.9 volts is a good indicator that your battery has excessive voltage.

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## Is 15.1 volts too high?

Thanks. 15.1 volts is not necessary too high .

## Is 14.5 volts overcharging?

Is 14.5 volts overcharging? If the alternator is working well, your multi-meter should read somewhere in the vicinity of 14 volts (typically 13.8-14.2). If it is reading excessively higher than 14 volts (greater than 15 volts) it is possible that the voltage regulator on your alternator is faulty or going bad.