How to Check Your Car Battery Voltage

Car Battery Check
Withouta car battery, it’d be pretty hard to get to where you need to go. Car batteries are an important part of the vehicle, but are sometimes overlooked. Batteries will wear down and need replacement as time goes on. It’s a good idea to know how to test the battery voltage and what to look for when doing so.

If you’re driving through Atlantic City, Egg Harbor, and Vineland, use this helpful battery voltage guide from BMW of Atlantic City to assist you. This is a simple maintenance task that can be handled in just a few minutes.

Checking Battery

Performing a Battery Sight Check

An easy thing to do to check the battery voltage is to perform a basic sight check of the battery. Turn the car on, then flip the headlights on. Check to see if they’re fully lit or if they look a bit dim. If they’re dim, it means they’re drawing from the battery and not the alternator. If the lights get brighter when you press on the gas pedal, the alternator is assisting, but it’s not properly charging the battery when the car is idle.

If the headlights are bright and don’t flicker when revving the engine, pressing the brakes, and then revving the engine one more time, the system is likely functioning as it should.

Get Battery Checked near Atlantic City

How to Test the Battery Voltage in Your Car

If you’re looking to test the car battery voltage, only a few items are needed. Procure a set of safety goggles and rubber gloves for protection. An item known as a digital voltmeter will be needed, but an analog voltmeter can be used, too. This is also known as a multimeter. These can be found at any local auto parts store.

Make sure the car is turned off. Open up the hood to find the battery. Use the owner’s manual if you need help on where to access the battery.

Using the voltmeter, the positive lead should be connected to the positive terminal of the battery. Both should be a red color or have a “+” symbol on them. Do the same thing for the negative terminal, which has a black color and a “-“ symbol. Check the voltmeter reading. It should be around 12.45 volts, but not more than 12.7 volts. If the reading comes in below this range, it might be time to replace your car battery.

Visit Our BMW Service Center

We expect our vehicles to start every time we turn the key. However, there are times when a dead battery can prevent that from happening.

Batteries will typically last about four years, sometimes longer. If your car seems to be turning over a few times before starting or you’ve had to jump-start it to get it going, bring your car to our service center. We’ll be happy to check the battery for you and let you know if it’s time to replace it.

Complete Battery Maintenance and Care

For comprehensive battery maintenance and advice, visit BMW of Atlantic City today. We’re proud to service vehicles of Atlantic City, Egg Harbor, and Vineland drivers. So, what are you waiting for? Schedule your service appointment today!


BMW of Atlantic City is located at: 6037 E Black Horse Pike • Egg Harbor Township, NJ 08234

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