Book 1, Understanding Boat Batteries and Battery Charging, includes the following subjects: lead acid batteries; AGM batteries; gel batteries; general battery information; battery ratings and selection; safety, installation, and maintenance; charging, alternators, and regulators; and more. Book 2, Understanding Boat Wiring, includes the following subjects: boat wiring standards; electrical school basics; system voltages; how to plan and install boat wiring; circuit protection and isolation; switchboards and panels; grounding systems; and more.