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What is a Voltmeter?

Your car’s battery carries a charge measured in volts. The battery produces this charge through the chemical reaction produced when a positively charged lead pole and a negatively charged lead pole are immersed in a sulfuric acid solution. The charge builds to a given potential regulated by the amount of oppositely charged poles used. The charge in a battery is measured using a voltmeter.

A voltmeter is a device that measures the electrical potential difference between tow oppositely charged units. In the case of your car’s battery, these units are the positive and negative poles. 

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Signs That Your Ignition Needs Immediate Service

Car ignition switches can go bad for one reason or another. Many people think that their ignition has failed, when it may be another issue with the battery or starter. Ignition switch problems can cause car stalling or may not be able to even turn on the car. What do you do in this situation?

The first thing would be check the key. Is your key worn out and not turning in the ignition switch? This could be a sign that you need a new key or perhaps the transponder in your key is not working with the vehicle's…

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