Practice Test Geeks(CAR) Certified Appliance Recycler Practice Test
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Electric & Hybrid Vehicle Processing Flashcards

7 cards from real CAR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Electric & Hybrid Vehicle Processing flashcards as text

  1. Before cutting into a high-voltage battery pack housing during EV dismantling, the technician must confirm the pack is fully de-energized by measuring voltage between the service disconnect and pack terminals. What reading indicates it is safe to proceed?

    Answer: Less than 60 volts DC

    OSHA and OEM guidelines define 60 V DC as the threshold below which a high-voltage system is considered de-energized and safe for unprotected contact.

  2. Which federal regulation governs the transportation of damaged or defective lithium-ion EV battery packs classified as hazardous materials?

    Answer: 49 CFR Part 173.185

    49 CFR 173.185 sets DOT packaging, labeling, and documentation requirements for lithium batteries shipped as hazardous materials.

  3. A plug-in hybrid's high-voltage system uses orange-colored cables. What is the primary reason orange is the industry-standard color for these conductors?

    Answer: To provide immediate visual warning of high-voltage potential

    ISO 6469-3 adopted orange as the universal high-voltage cable identifier so first responders and technicians can instantly recognize lethal conductors.

  4. When storing a partially depleted EV battery pack awaiting recycling, what state of charge (SOC) range do most recyclers target to minimize thermal runaway risk?

    Answer: 15–25%

    Most OEM and recycler protocols recommend storing Li-ion packs at 15–25% SOC, which reduces stored energy while avoiding damaging deep discharge.

  5. An automotive recycler removes a nickel-metal hydride (NiMH) battery from a hybrid and must dispose of it. Which program is specifically designed to handle end-of-life NiMH hybrid batteries in the US?

    Answer: Call2Recycle

    Call2Recycle operates the primary US take-back and recycling network specifically for rechargeable batteries including NiMH hybrid packs.

  6. Which tool is essential for verifying that a Toyota Prius Gen-3 high-voltage system is fully isolated before removing the battery service plug?

    Answer: A calibrated high-voltage multimeter rated CAT III 1000V

    Only a CAT III 1000V-rated digital multimeter can safely measure the lethal voltages present in hybrid/EV systems without risk of arc flash or instrument failure.

  7. During the thermal runaway of a lithium iron phosphate (LFP) battery cell, which gas is primarily released that creates an asphyxiation hazard in enclosed spaces?

    Answer: Carbon monoxide and carbon dioxide

    LFP thermal runaway produces significant CO and CO₂ along with trace toxic gases, making CO/CO₂ the primary asphyxiation concern in enclosed recycling facilities.