![]() ![]() A higher voltage reading typically indicates a faulty charging system, voltage regulator, or circuits. If you notice the gauge reading 15 volts or higher at any time, it’s an indication of a more serious problem. As the voltage continues to drop with the passing time, this is another sign that your battery is about to die. On the other hand, a lower than 12.5 volts reading even with a running engine indicates that it is not producing adequate current. Below 12.5 VoltsĪ reading of below 12.5 volts on your battery gauge when you give it a partial start indicates there is a problem with the battery’s operating and charging system. On the other hand, a running truck should have a battery gauge reading of about 13.7 to 14.7 volts. Once you start the engine and your car begins to move, the gauge should read anywhere between 12.6 and 14.5 volts. This is an indication that the car battery is in good shape and functioning properly. When you give your car a partial start (but don’t leave the engine running), a properly working battery gauge should give you a reading of about 12.5 volts. What Should A Working Battery Gauge Read On My Car? On the other hand, a value of below zero indicates that the battery can produce adequate charge and risks dying. On a car fitted with an ammeter, the needle should read zero.īut, if you notice a reading of more than zero while the engine is on and the car is in motion, this is an indicator of a properly working battery. This also means that you should read it slightly differently. ![]() So, when reading the gauge, you have to treat it as an ammeter and read it in amps. Older cars are usually fitted with a battery gauge that reads in amps instead of voltage. Here’s a brief detailed clip on how to read the voltage of your car’s battery via a gauge If you notice a reading of more than 15 volts or less than 12.5 volts, this is an indication of trouble with your battery or charging system. In fact, this is a good indicator that your battery is in exceptional shape and operating effectively. The slightly higher voltage on the battery gauge shouldn’t surprise you. Typically, the voltage can go from 12.5 to about 14.5 volts. You should expect the voltage to continue increasing as you start to drive the car. Then, check the voltmeter – the voltage must’ve slightly increased by then. Restart the car and keep the engine running. Step 2: Check The Voltmeter With A Running Engine Immediately look at the voltmeter – it should read 12.5 volts to confirm the battery is fully charged and functioning normally. So, to confirm this, put the key in the ignition and start the vehicle partially (don’t fully start the engine or keep it running). While a normal car’s fully charged battery has 12.6 volts, it needs to be at 12.5 volts or more for the car’s engine to function normally when you start the car. This is the area you check to confirm your car battery’s voltage. The battery gauge where you see the indicator needle is also referred to as the voltmeter. Here’s a detailed step-by-step guide for reading a car’s battery gauges: Step 1: Start With The Voltmeter Reading On A Stationary Car If you notice the needle anywhere below 12.5 volts or above 15 volts, this is an indicator of a battery-related r charging problem. The needle should be indicating anywhere above 12.5 volts but below 15 volts. To read a battery gauge on the car’s dashboard, look out for the needle indicator of the gauge. Other obvious indicators include the gauge needle in the normal middle position, indicating the battery and charging system are fine. ![]() Now, you can easily identify the gauge through the small battery icon or picture on it. ![]() Typically found on the car’s dashboard, the battery gauge sits along with other indicators, such as the speedometers, fuel gauges, temperature gauges, and other similar indicators.
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