Question 249Electricity & Electronics - 1st Asst/Chief

The correct answer is B) keeping the terminals and connections clean and tight. The routine maintenance of lead acid batteries on a vessel involves ensuring the terminals and connections are clean and tight. This is important to maintain a good electrical connection and prevent corrosion, which can affect the battery's performance and lifespan. The other options are not typical routine maintenance tasks for lead acid batteries. A load test is used to assess the battery's condition, replacing the electrolyte is only necessary if the battery has been overfilled or has excessive water loss, and replacing the plates and separators is a major repair that is not part of routine maintenance.