![]() So if your engine isn’t giving you anything, your best bet is to attempt the elusive jump start, or alternatively call for somebody who knows how to get you going quickly. This cranks the engine, and inspires it to start, running at an idle speed until the you’re ready to move the car. Normally turning your key in the ignition invites the battery to start supplying power to the starter. If you’re turning the key in the ignition and your engine is lagging, or not catching at all, nine times out of ten it’s a sure sign your battery is close to dying, or completely flat. So how do you know when your car battery is flat or is close to calling it quits? If you choose a Marshall battery, you’ll receive up to 42 months warranty, so it’s convenient and affordable to keep your battery in tip-top shape! ![]() Batteries normally have an average life expectancy of three years and the age of your battery – even though it doesn’t show any obvious signs of age, can negatively affect the other components of your car. Apply some Vaseline or grease to the poles before closing the cover to prevent corrosion.How do you know if your battery is flat? Your car battery is an essential source of power to your car – without it you’re not going anywhere. Replace the terminals, starting with the positive terminals. Make sure that the battery does not rock sideways. Place the cleaned battery on the battery compartment and screw it in place. Repeat the procedure with the connectors.Ĭheck the battery carrier for signs of corrosion and make sure there are no mixing screws. Pour the ingredients into a container and wash the top and side of the battery with a soft brush. All you need is some baking soda, water, and a soft brush. If the battery has cracks, you must replace it.īefore you put the battery back in the battery carrier, you must clean it. Next, inspect the battery terminals and look at the insulation. Doming of the battery is the result of overcharging. Place the battery on a flat surface and check that no bulge has formed on the surface of the battery. To do this, you must first disconnect the battery terminals and then remove the battery from the car. ![]() Larger discrepancies in the measured values indicate that the battery is sulfated.Ī physical examination of the car battery is essential to detect any cracks. Repeat the test with the other cells.Ī functioning battery will have a reading between 1.265 and 1.299, while a reading below this indicates an undercharged battery. Make a note of the measured value for the specific gravity of the electrolyte. As soon as you release the lid, the electrolyte flows into the hydrometer. Drop your hydrometer into the first cell and press the hydrometer cover together. To begin, open the plate covers on the top of the battery. Also, do not use a metal thermometer for the electrolyte temperature because of reactions with the acid. You will find some models that adjust themselves, while some come with a conversion table.īattery acid is dangerous, and you must wear gloves when working with acid. For best results, buy a hydrometer with a thermometer. If the acid is weak, the battery is working properly. ![]() The hydrometer is used to check the degree of acidity in the battery plates. ![]()
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