What happens if a car battery is not used for a long time?

Answer 1

this happens mainly because a charged body loses its charge through leakage into the atmosphere. this is particularly so if the air is moist.besides this the terminal also get oxidised with time.that battery has a finite life is also due to occurence of the unwanted chemicals and physical changes to or the loss of the active materials of which they are made. this might happen if the membranes that separate different chemicals erode or lose their character.

Answer 2

If a car battery is not used for a long time, it can experience several issues due to a process called self-discharge and other factors. Here are some potential problems that may arise:

Self-Discharge: All batteries, including car batteries, naturally lose their charge over time, even when not in use. This is known as self-discharge. The rate of self-discharge depends on various factors, including the battery type and temperature. If the self-discharge is significant and the car is not used for an extended period, the battery may drain completely.

Sulfation: When a lead-acid battery, common in many cars, is left in a discharged state for a long time, sulfur crystals can form on the lead plates inside the battery. This process is known as sulfation, and it can reduce the battery's ability to hold a charge. In severe cases, sulfation may lead to permanent damage.

Low Voltage: If the battery voltage drops too low, it can affect the performance and lifespan of the battery. Modern vehicles with advanced electronic systems may experience issues or malfunctions when the battery voltage is too low.

Freezing: In cold climates, a partially discharged battery is more susceptible to freezing. When the electrolyte inside the battery freezes, it can cause internal damage and reduce the battery's effectiveness.

To prevent these issues, it's advisable to take certain precautions if you know the car won't be used for an extended period:

Keep it Charged: If possible, use a battery maintainer or trickle charger to keep the battery charged. These devices supply a low current to the battery, preventing self-discharge and maintaining an optimal charge level.

Disconnect the Battery: If you're not using the car for an extended period, consider disconnecting the battery to prevent any slow discharge due to the vehicle's electrical systems.

Store in a Controlled Environment: If feasible, store the vehicle in a cool, dry place. Extreme temperatures, whether hot or cold, can accelerate the self-discharge process.

By taking these precautions, you can help ensure that your car battery remains in good condition, even if the vehicle is not used for an extended period.

Answer 3

It would depend on your definition of "while". All car batteries will go flat if not charged for very long periods of time.