OptiMate (TM-245) 4 DUAL PROGRAM BMW CAN-bus edition OptiMate 4 CAN-bus edition Dual program Battery Saving Charger-Tester-Maintainer with 9 step program that includes battery test at connection and after charging, 05 Volt low voltage start, advanced desulfation modes, cell balancing and OptiMate maintenance program Weatherproof Polycarbonate enclosure with integrated wall mounts, SPT-2W power and output cables rated down to minus 40 degrees, O9 DIN motorcycle 12V connector cable and O4 battery clip accessories with OptiMate SAE connector PROVEN Save neglected / sulfated motorcycle batteries other chargers can't even batteries down to 05 Volts with safe low volt pulse desulfation for batteries still connected to vehicle or charged through CAN-bus socket CAN-bus edition model TM-245 default setting is CAN-bus (charging through BMW controlled 12V socket that requires system to recognize charger is connected) with DIRECT to battery charging with easy program change procedure The most advanced most trusted charger in powersport that is able to charge and continuously maintain a BMW battery through CAN-bus controlled 12V socket without supervision