If your vehicle is having trouble starting, schedule an appointment with a mechanic to identify and fix the problem by looking online for garages in Reading. If you see a few serious warning signs, your battery's life is soon to expire. The first factor that caused your check engine light to come on. Although the alternator in your vehicle could potentially be at fault, this often means that your battery is failing. What Is the Lifespan of a New Car Battery? The lifespan of your vehicle's battery after replacement relies on how long it can maintain a charge and how long it can be recharged. When it can no longer be charged, it is dead. It's thought that a fresh battery can last up to six years if you consistently drive in ideal conditions, which don't involve extreme heat or humidity. If you check MOT history of any vehicle, a weak battery is frequently the cause of a failed MOT test. .