Which statement best describes the replacement of a lead-acid battery?

• A. Replace immediately
• B. Replace per manufacturer's recommendations
• C. Replace after 10 years
• D. Never replace

Answer: (B)

Replacement timing for a lead-acid battery should follow the manufacturer's recommendations. These batteries vary in life and performance based on design, how they’re charged, temperature, and how often they’re used, so the guidance from the manufacturer sets the appropriate replacement point. They specify service life, inspection intervals, and the criteria that indicate replacement is needed—things like an inability to hold a charge, rising internal resistance, or frequent unexpected failures. Using their schedule helps keep the system reliable and avoids the costs of replacing too early or the risk of failure from waiting too long. Replacing immediately without assessing condition isn’t necessary unless there’s a clear failure. Relying on a fixed age—like 10 years—for all batteries isn’t appropriate because lifespans vary. Never replacing a battery at all can endanger system performance. When in doubt, conduct the recommended health checks and follow the manufacturer’s replacement plan.