Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A technician is performing a battery load test on a 12V heavy-duty truck battery. The battery has a CCA rating of 1000. For a proper load test, what current (in Amperes) should the battery be discharged at, and for approximately how long, at 21°C?
According to common industry standards and battery manufacturer recommendations for load testing, a battery should be discharged at half its rated Cold Cranking
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Question: A technician is performing a battery load test on a 12V heavy-duty truck battery. The battery has a CCA rating of 1000. For a proper load test, what current (in Amperes) should the battery be discharged at, and for approximately how long, at 21°C?
Answer options: ✅ 500 A for 15 seconds.
- 250 A for 30 seconds.
- 1000 A for 5 seconds.
- 100 A for 60 seconds.
Correct answer: 500 A for 15 seconds.
Explanation: According to common industry standards and battery manufacturer recommendations for load testing, a battery should be discharged at half its rated Cold Cranking Amperes (CCA) for 15 seconds. For a 1000 CCA battery, this would be 500 A for 15 seconds.
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