Most cars use lead acid batteries which are highly durable and require less maintenance. Over the years myths about car batteries have turned out to be facts which are false. Let us debunk some common myths about car batteries.
Car Batteries self discharge while in storage (FACT)
When a battery is stored for an extended period of time it would start to discharge only when the state of charge is less than 100%. This is due to the formation of lead sulphate crystals in the pores and the surface of the positive negative plates inside a lead acid battery. If the battery is stored in a cold place this is less likely to occur. A well maintained car battery will not self discharge when kept in storage.
Maintenance free batteries do not require maintenance (MYTH)
This is purely a myth, during summer the water present in the electrolyte solution will deplete. This could also occur due to overcharging or changing current, it is better to use non-sealed car batteries in cars which run in hotter climates because distilled water can be added if required. All car batteries require maintenance regardless of their type as battery terminals are bound to corrode over time. They are called maintenance free batteries as they involve less cost for maintenance.
A good battery will last over five years (FACT)
A known fact is that a well maintained battery is bound to last for five years, however there are a number of factors which determine the battery life. An overcharged or an undercharged battery is bound to fail. If a battery is charged using a defective system or not maintained properly it would result in failure. If your car frequently driven in extreme cold climatic conditions its battery life will reduce considerably even if it is maintained it well.
Bad batteries do not harm the charging system (MYTH)
A bad or weak battery can cause premature failure to the vehicle as it exerts excess strain on the charging system and the starter motor. This will lead to starter failure, alternator damage and internal circuit failure.
Cars with stop-start technology exert strain on car batteries (FACT)
The start stop technology is designed to automatically shutdown and restart the car engine. It is used to reduce fuel costs and reduce emission to contribute to an Eco-friendly environment. A car equipped with an auto start-stop feature will cost greater demand on car batteries. A lithium ion battery is best suited for cars that are equipped with this feature.
Old car batteries need not be recycled (MYTH)
Car batteries contain a mixture of lead dioxide and sulphuric acid which is harmful to the environment. Old car batteries must be recycled as they cause environmental pollution and also pose a threat to human life and contaminate water bodies.
Driving a car will fully recharge the battery (MYTH)
The car battery charges as current from the alternator gets diverted to the battery in order to charge it. This depends on several factors such as the availability of current, external temperature, idling time etc. So just by driving your car for a a few miles you cannot expect the battery will to get fully charged.
The bigger the cold cranking amps the better the battery (MYTH)
Most vehicle manufacturers design the electrical systems around a specific size, this depends on the vehicles computer systems. The car’s computer systems regulate power required for normal operation as the electrical systems use a limited amount of power for operation. So if you purchase a battery with a CCA rating higher than your car’s required rate you are wasting money.