We like to say that knowledge is power, but in this case, knowledge about your car battery actually IS power. Your battery is a part of your vehicle you never think about until the day you jump in your car to go to work and the engine won’t turn over. Your GPS, stereo, lights, ignition, and climate control all draw a significant amount of power, and without it everything grinds to a halt. Let’s take a quick look at how batteries work, how to maintain them, and how to get out in front of a failing battery before you are left stranded.
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We are going to be very general here as battery types and their use-cases are worthy of a whole article on their own. “Car batteries” as a whole refer to SLI batteries (starting, lighting, ignition) so they power the starter motor, the lights, and the ignition system. SLI batteries are usually lead-acid batteries and are made up of six galvanic cells, each producing 2.1 volts to make up a 12-volt battery. Heavy vehicles may have two batteries and use a 24-volt system, but 12-volt is standard for the majority of owners.
The cells in lead-acid batteries are made up of plates of lead and separate plates of lead dioxide, which are submerged into a an electrolyte solution of sulphuric acid and water to create a chemical reaction that produces electricity. Since this reaction takes place under the hood next to a very hot engine, the water in the solution will eventually evaporate. The electrolyte solution will condense and recycle itself inside batteries that are fully sealed, but low maintenance (or partially sealed) batteries can be topped up by the owner to keep them going strong. Let’s look at how you do it:
If you look at your battery and see that it is completely sealed with no holes and caps on the top surface, you are in possession of a no maintenance battery. This means that you do not need to do anything to keep the electrolyte solution in balance. Over the years it will eventually break down and wear out, holding less and and less of a charge until it needs to be replaced.
If you look at your battery and see caps and holes on the top surface, you are in possession of a low maintenance battery. Some will have a window where you can see the fluid level, if not, just open up a few of the port holes and take a look. Each cell should have the same amount of fluid, so top up any of the chambers that have gotten low. As the fluid is evaporating it is leaving the lead plates high and dry inside the battery, so you need to cover them with liquid so they can continue to function. On the west coast, regular tap water is fine, out east where tap water has a high mineral content you will need to use distilled water.
Corrosion: Acid dust and corrosion will build up on the battery’s posts over time and it should be removed to ensure a strong connection. There are some great tips and tricks about how to do this, and it is the subject of next week’s slideshow. We place a link here the second it is ready.
Your battery should last 3 to 5 years if not more, but depending on the quality of your battery, weather conditions, and other factors it may catch you off guard when it starts to lose charge. Here are some warning signs:
If your vehicle is ready for maintenance or have any further questions please be in touch via phone or email. You can find all of our contact information and location right here and at the top of each page on this site. You will be greeted by one of the handsome fellas below, who are happy to take your questions any time of day to make you feel confident that you are making sound decisions regarding your vehicle’s health.
Hi, my name is Kevin and I am a mechanic at Parkside Motors Victoria.
Hi everyone, my name is Malachi Harrison, I am a 2nd year apprentice at Parkside.
My name is Kris Cooper, and I am a third year mechanic apprentice at Parkside.
My name is Joseph Lee, and I am a Red Seal Certified mechanic at Parkside.