How often is the car battery replaced and how long is the battery life?

Among auto parts, in addition to tires, the battery is the most prone to problems. As an important power supply device in the car, the battery not only starts the car, but also supplies power to the on-board electrical equipment. If there is a problem, it will affect the use of the car. The car battery is generally replaced every two years, but the specifics depend on the type of battery, actual usage and normal maintenance.

There are several types of car batteries, including ordinary lead-acid batteries, maintenance-free batteries and AGM/automatic start-stop batteries.Generally, the service life of ordinary batteries is about 2-3 years, but now most cars use maintenance-free batteries, which are relatively more durable and have a longer lifespan. Generally, they can be used for about 3-4 years. With proper maintenance and good car usage habits, the battery life of a car can be extended by one or two years.

Lead-acid batteries

Among them, the most common is the lead-acid battery, whose electrodes are composed of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid.It is cheap and stable in voltage, but requires frequent maintenance and has a relatively short life span. Under normal use, the life span is approximatelyAbout 3 years.

Maintenance-free battery

Then there is the maintenance-free battery. Compared with the lead-acid battery, it consumes a very small amount of electrolyte and basically requires no maintenance. It also has the characteristics of high temperature resistance, small size, and small self-discharge.But the price is twice as expensive as lead-acid batteries. Under normal circumstances, the replacement cycle is equivalent to that of lead-acid batteries.About 3 years.

AGM battery

A car equipped with automatic start-stop function needs a more powerful battery to make it operate normally, and the special AGM battery for the equipment uses ultra-fine glass wool material. This battery has a stronger cyclic charging ability and a longer service life. Can be used when used4-6year. Moreover, the battery has a better low-temperature starting effect, and the capacity is more stable during use, but the price is the most expensive.