Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test. Utilize flashcards and multiple choice questions with helpful hints and explanations. Get exam-ready!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the specific gravity of a fully charged lead-acid battery?

1.100
1.265
1.500
1.350

The correct answer is: 1.265

The specific gravity of a fully charged lead-acid battery is approximately 1.265. This measurement is critical because it indicates the state of charge of the electrolyte solution in the battery. In a lead-acid battery, the specific gravity is a ratio that compares the density of the sulfuric acid electrolyte to that of pure water. At full charge, a lead-acid battery typically has a specific gravity around this value, suggesting optimal performance and capacity. If the specific gravity is significantly lower, it may indicate that the battery is partially discharged or even defective. Therefore, understanding the specific gravity can help in diagnosing battery health, ensuring that the RV stays powered, and extending the lifespan of the battery. This characteristic is essential knowledge for technicians working with RV electrical systems.