Fast 6amp and normal 4.5 amp charge settings. LED battery condition tester. LED charging status display. +/1 polarity inversion protection. Thermal overload safety cut-out. Insulated copper leads and battery clips. Input 230V - 50Hz 60W - Output 12V (for lead acid batteries only). Normal RMS 4.5A (Arith DC 3A) Fast RMS 6A (Arith DC 4A)