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Ten Car Battery Myths that Car Owners Should Stop Believing in

Everything in this world is either true or false; the same is true of the car battery. There are several misconceptions regarding car batteries. The car battery powers the vehicle and its other components. It is vital to comprehend the fundamentals of the battery to keep the vehicle running efficiently. Knowing the facts can help you save your money and time.

In this blog, we will learn how to debunk a few common car battery myths so you’ll be prepared when it’s time to replace your car battery or maintain your present one.

Car Battery Misconceptions That You Need to Know

  1. 1. Suppose your car is not starting, it is the battery’s fault:
  2. This one is the biggest misconception among car owners. A malfunctioning starter motor or alternator, blocked fuel injectors, or damaged spark plugs are all potential causes of your car failing to start.

  3. 2. Idling your car or driving it for a short distance to recharge the car battery:
  4. Sitting in your car and letting it sit for any length of time does not fully recharge the battery and may potentially shorten its life. Connecting a maintenance charger to your battery is a preferable alternative for keeping it in good shape.

    The most substantial drain on your battery occurs when you start your car. It takes a lot of energy to start a car running, so a short journey is unlikely to return enough charge to the battery to offset the energy cost.

  5. 3. A discharged battery does not affect the car’s fuel efficiency:
  6. When a car battery is entirely drained (also known as flattened), the entire strain is placed on the car’s alternator to recharge the battery in any way possible. Because of the increased strain on the alternator and engine, your car is more likely to burn additional fuel.

  7. 4. If you are not driving, disconnect the car battery:
  8. This is one of the common myths that most car owners tell others! During the holiday season or for any other purpose, many people do not use their cars for several days or weeks. But, that does not mean you should detach your battery from the car.

    Certain systems require constant power to operate. These systems will not be able to reconnect if the battery is disconnected. Rather than disconnecting the battery, use a car battery maintenance charger to keep it completely charged even if you are not driving for several days.

  9. 5. It is okay to fill the car battery with tap water:
  10. Never, ever try this! Minerals in tap water can build up and clog the battery plates’ coatings and openings. When the pores of a car battery get clogged, problems such as corrosion, short-circulated cells, and broken internal connections are unavoidable. That’s why it is better to use distilled water, as it does not have any corrosive minerals and retains durability.

  11. 6. Car batteries can last longer in hot climates than in cold:
  12. It is tough to start a car in extreme cold because the battery struggles to generate enough electricity, but it is high temperatures that shorten its lifespan. A vehicle’s battery charge is maintained by a liquid electrolyte solution. This liquid evaporates more quickly in highly hot conditions, reducing its performance and lifespan.

  13. 7. You can easily test the car battery by its weight:
  14. While it is true that a battery’s quality improves with the amount of lead it contains, some lesser-known, lower-quality and less expensive batteries may be heavier due to “dead weight” rather than lead.

    This weight-equals-quality rule does not apply to lithium-ion batteries used in electric vehicles.

  15. 8. Car maintenance can help the battery last longer:
  16. A battery is a consumable item that will wear out over time. While careful charging, testing, and maintenance can help extend the life of your battery, it will eventually need to take it to the mechanic to perform a car battery replacement service.

  17. 9. A faulty battery warning light on the dashboard:
  18. This could signal a problem with the alternator or the car’s charging system, but it’s not always the case. As a result, the vehicle can only run on battery power. If you keep driving like this, the electrical system will be damaged, and the vehicle will finally break down.

  19. 10. A Car Battery Discharges Faster in Winter:
  20. A battery’s ideal outdoor temperature is roughly 20 °C. However, as temperatures rise, the battery will naturally self-discharge, causing it to age more quickly. This process reduces the battery’s stored charge, which may be noticeable only in the winter when the engine requires more energy to start.


When it comes to high-value products like your car, a little information goes a long way and can save you a lot of money. The above-mentioned points are about the myths that you need to stay away from. If you are looking to get your car serviced, then you’ve come to the right place. Swift Tyre Specialist is the best car servicing in Singapore. Contact us now.

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