From John C. Payne, one of the foremost international authorities on marine electrical systems and electronics, comes an easy-to-understand yet thorough treatment of boat batteries and charging.Concise, compact, and fully illustrated for easy reference, Understanding Boat Batteries: 2nd Edition has been fully revised throughout. This guide offers a comprehensive coverage of the following major topics:Lithium, lead acid, AGM, and gel batteries,Battery ratings and selection,Safety and maintenance,Installation,Charging,Alternators and regulators