Charge two batteries at or away from the dock. Use AC shore power to charge two isolated battery banks with the 3-stage 10A battery charger, or share the DC power from the alternator with both the Start and the Auxiliary battery through the integrated 65A Automatic Charging Relay (ACR). Battery temperature compensation prolongs battery life. Start isolation protects sensitive electronics from voltage sags and spikes. Includes LED remote indicator for charge status at the helm. Snap-on insulating cover. One-piece stainless flange nuts ensure safe and secure connections. 65A continuous rating. 115A intermittent rating. Five-year warranty.