How to Determine Whether a Battery is Good or Bad?
2 Answers
Methods to determine whether a battery is good or bad: 1. Car batteries are equipped with an inspection eye, which displays different colors indicating the battery's status. Observing the color of the inspection eye can help assess the battery's condition. 2. Have a professional technician measure the battery's internal resistance and voltage. The battery is a crucial component of a car, powering all electronic devices when the engine is off and also responsible for starting the engine. Batteries are wear-prone parts and require replacement after prolonged use. Typically, lead-acid batteries have a lifespan of 3 to 4 years. Many car batteries fail before reaching this duration due to improper usage habits of the owner.
As an experienced driver who frequently uses the car, I've accumulated some knowledge to assess battery condition. The key is to observe starting performance - if the engine sounds sluggish during ignition, struggles to rev up, or the headlights noticeably dim, these could indicate a failing battery. I regularly check voltage with a multimeter; it should read at least 12.6V when static, and if it drops below 10V during startup, it suggests high internal resistance and imminent failure. Don't forget to inspect terminals for white corrosion, which affects conductivity. I recommend monthly visual inspections for bulging or leakage, and pre-warming the battery in winter to reduce unexpected breakdowns. Early detection ensures safer driving - don't wait until you're stranded roadside to regret it.
