Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A fully charged 12-volt lead-acid battery should have a specific gravity reading of approximately what range?
A fully charged lead-acid battery typically has a sulfuric acid electrolyte with a specific gravity between 1.265 and 1.300. Lower readings indicate a discharge
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Question: A fully charged 12-volt lead-acid battery should have a specific gravity reading of approximately what range?
Answer options:
- 1.100 to 1.150 ✅ 1.265 to 1.300
- 1.000 to 1.050
- 1.400 to 1.450
Correct answer: 1.265 to 1.300
Explanation: A fully charged lead-acid battery typically has a sulfuric acid electrolyte with a specific gravity between 1.265 and 1.300. Lower readings indicate a discharged state or a problem with the battery.
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