When should I replace my car battery? Is there a definitive timeline that dictates when a battery is no longer reliable? Considering the importance of a well-functioning battery for optimal vehicle performance, how can I determine if my current battery is nearing the end of its operational life? What are the signs and symptoms that indicate an impending failure? Perhaps I should contemplate the role of environmental factors, such as extreme temperatures, in affecting battery longevity. Moreover, how do driving habits impact the overall lifespan of a battery? Are there specific indicators, such as difficulty starting the engine or dimming headlights, that warrant immediate attention? In addition, should I be vigilant about any corrosion around battery terminals? It’s crucial to ask whether periodic testing and maintenance are sufficient to prolong battery life or if proactive replacement is ultimately the prudent choice. What recommendations exist for ensuring my vehicle remains dependable?