C-CHARGERŪ 2000 Series Marine Electronic Battery Chargers are an excellent choice for value-priced, high performance products. Utilizing high-quality components and corrosion-resistant anodized aluminum housing, C-CHARGERŪ are built to last, performing in the toughest of marine environments. Charles 2000 SP battery chargers feature a battery type selector switch. This feature allows the boater to charge either lead acid, gel, or AGM batteries.