Your car’s basic functioning relies heavily on the battery. A standard car battery should last for around six years, but this largely depends on how well you treat it. When the engine is off, your car will draw power directly from the battery, which will cause it to drain quicker. There are usually some obvious symptoms when it is time to replace your car battery. The most obvious is that the battery warning light will be illuminated! Another sign could be that the vehicle electronics suddenly stop working without any explanation. Since batteries are full of chemicals, you should make sure to dispose of the old ones in the proper manner.