TrailerPro Academy
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Level 2 · Advanced Technician · Module 20

Batteries, Charging & 12V Systems

Battery types, testing, charge lines and 12V power.

Lessons

  1. 01Battery Fundamentals, Selection, and Safe HandlingIdentify battery technologies, evaluate capacity and condition, and plan safe battery-bank service for trailer applications.
  2. 02Charging Sources, Control Profiles, and System IntegrationConfigure and test shore, tow-vehicle, solar, and inverter-charger systems against the installed battery's requirements.
  3. 0312 V Distribution, Circuit Protection, and Wiring ServiceInspect and repair DC power paths using correct conductor selection, protection, termination, and loaded voltage-drop testing.
  4. 04Advanced Diagnostics, Breakaway Verification, and Service RecordsDiagnose intermittent and stored-energy failures, verify emergency braking power, and document a safe, repeatable final inspection.
  5. 05Energy Audits and Verified Operating AutonomyTranslate trailer operating requirements into an energy budget and verify usable runtime under representative conditions.
  6. 06BMS Protection Events and Controlled RecoveryInterpret lithium battery protection events and restore operation without defeating the battery management system.
  7. 07High-Current Actuators, Contactors, and Motor DutyDiagnose 12 V motor-driven trailer equipment by correlating electrical demand with mechanical load, control sequencing, and duty limits.
  8. 08DC Power Quality and Electromagnetic InterferenceFind brief supply disturbances and interference that cause electronic resets, false signals, or unreliable communication.
  9. 09Battery Compartments and Seasonal RecommissioningMaintain the battery installation's mechanical and environmental integrity through service, storage, and return to operation.
  10. 10Networked Power Management and Load-Shedding ValidationCommission communicating power devices and automatic load controls while preserving essential trailer functions.
  11. 11Battery Discharge, Defect Evidence and Warranty RoutingDistinguish a discharged battery from a documented defect before preparing a Continental claim.