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A city plans to use second-life EV batteries to create a backup power system for emergencies. Which of the following factors is MOST important to ensure the system works reliably?

hard📝 Application Q15 of 15
EV Technology - Future Battery Technologies
A city plans to use second-life EV batteries to create a backup power system for emergencies. Which of the following factors is MOST important to ensure the system works reliably?
ARegular testing and monitoring of battery health and capacity
BUsing the oldest batteries available to save costs
CCharging batteries only when the emergency occurs
DInstalling batteries without any cooling or safety systems
Step-by-Step Solution
Solution:
  1. Step 1: Identify key reliability factors for backup power

    Backup systems must have batteries in good health and known capacity to work when needed.
  2. Step 2: Evaluate options for reliability

    Regular testing and monitoring ensure batteries perform well; using oldest batteries or no safety risks failure.
  3. Final Answer:

    Regular testing and monitoring of battery health and capacity -> Option A
  4. Quick Check:

    Monitoring health = reliable backup [OK]
Quick Trick: Test and monitor batteries regularly for reliability [OK]
Common Mistakes:
  • Choosing cheapest or oldest batteries without checks
  • Charging only during emergencies causes failure
  • Ignoring cooling and safety systems risks damage

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