• Constantly monitors the battery without the damaging effects of trickle chargers• After a full charge is reached the Plus converts to float charging and monitors at 13.2-volts• Although a constant charge is being applied, there is little or no current (10 ma)• Fully automatic operation has reverse polarity protection• Included is a grommet-style pigtail that can be permanently installed on the bike• Also includes a spring-clip pigtail that can be used with cars, boats or RVs• Has fused quick disconnect rings and weather cover