Optimate 4 Dual Program Weatherproof Desulfating Battery Charger/Maintainer for BMW

Weatherproof Desulfating Battery Charger/MaintainerSpecial edition Optimate 4 Dual Program that has been optimized for CAN-bus equipped BMW motorcyclesCharger comes preprogrammed with the CAN-bus charging and maintaining programPreviously when the battery in a CAN-bus system was fully charged and a charger moved into the maintenance program, the CAN-bus system would automatically disconnect the charging circuit and require intervention from the user to reactivateWith the Optimate 4 Dual program it is now possible to automatically charge and maintain CAN-bus equipped motorcycles via their convenient external 12V charging port, without use of the ignition key or reactivationIncludes CAN-bus connection cord for use with the OEM 12V charging port and battery clip set for bench charging