Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test with our quiz. Utilize flashcards and multiple-choice questions, complete with hints and explanations. Achieve success in your exam!

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What is the approximate voltage reading of a fully charged battery at rest?

11.5 volts
12.0 volts
12.8 volts
13.5 volts

The correct answer is: 12.8 volts

A fully charged lead-acid battery, which is commonly used in RVs, typically shows a voltage reading of approximately 12.6 to 12.8 volts when it is at rest and fully charged. This voltage is an indicator of the state of charge of the battery, and when a battery is at rest, it has stabilized after charging or discharging. A value of 12.8 volts indicates that the battery is indeed fully charged, while lower values such as 12.0 volts or 11.5 volts suggest that the battery may be partially discharged or significantly discharged, respectively. The 13.5 volts reading would generally be seen while the battery is under charging conditions and not at rest. Thus, a reading of 12.8 volts is reflective of a fully charged state in a resting battery.