MLR 2: Battery Service & Starting System Review

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Across
  1. 6. The electrolyte solution inside a lead-acid battery, which is primarily composed of sulfuric acid (H₂SO₄) mixed with water.
  2. 9. The liquid solution inside a lead-acid battery that enables the chemical reactions necessary for storing and releasing electrical energy.
  3. 14. An electric motor that engages the engine’s crankshaft to begin the combustion process. It draws power from the vehicle’s battery and works with the ignition system.
  4. 15. A vehicle that uses two power sources—typically a gasoline engine combined with an electric motor and battery system
  5. 17. Occurs when the starter motor engages the engine’s crankshaft, causing it to rotate so the engine can start.
  6. 18. A measure of a battery’s ability to start an engine in cold temperatures.
  7. 20. Refers to electrical systems that operate at significantly higher voltages than standard 12-volt systems, typically found in hybrid and electric vehicles
  8. 22. Additional components and tools associated with the installation, maintenance, and service of a vehicle’s battery such as terminals, terminal protectors/covers, battery hold-downs/trays.
  9. 23. The process of using an external power source—usually another vehicle’s battery or a portable jump starter—to start a vehicle with a dead or discharged battery
Down
  1. 1. A diagnostic tool used to measure the specific gravity of the electrolyte in a lead-acid battery
  2. 2. Small covers located on the top of a flooded lead-acid battery that seal the individual battery cells while allowing gases to escape safely during charging and discharging.
  3. 3. A critical component that stores and supplies electrical energy to start the engine and power the vehicle’s electrical systems
  4. 4. A cleaning solution used to remove corrosion, dirt, and acid residue from battery terminals, cable ends, and surrounding surfaces
  5. 5. The electrical cables that connect the battery terminals to the vehicle’s electrical system, including the starter, alternator, and ground.
  6. 7. The electrical potential difference between the positive and negative terminals of a battery. It indicates the battery’s ability to supply power to the vehicle’s electrical system.
  7. 8. A battery memory saver is a tool used during battery replacement or service to prevent the loss of electronic settings and codes in a vehicle
  8. 10. The heat level of a vehicle’s battery during operation, charging, or storage. It is a critical factor because temperature directly affects battery performance, lifespan, and safety.
  9. 11. These battery connection points come in positive and negative and allow current to flow between the battery and the vehicle’s electrical components.
  10. 12. The primary component of the electrolyte solution inside a lead-acid battery, mixed with water. This solution enables the chemical reactions that store and release electrical energy
  11. 13. The system responsible for keeping the vehicle’s battery charged and supplying electrical power to all components while the engine is running
  12. 16. A diagnostic procedure used to check the health and performance of a vehicle’s battery under real operating conditions.
  13. 18. The points where the battery cables attach to the battery terminals and the associated contact surfaces.
  14. 19. Refers to the buildup of a white, bluish, or greenish powdery substance around the battery terminals and cable ends
  15. 21. Refers to the specific gravity of the electrolyte inside a lead-acid battery. This measurement indicates the concentration of sulfuric acid in the electrolyte and is a key indicator of the battery’s state of charge