SINGLE-PHASE,PORTABLE,CHARGING FOR LEAD-ACID BATTERY WITH 12V/24V AND SUIT FOR ALL KINDS OF CARS,VANS AND LIGHT TRUCKS. Model Input voltage(v) Rated duty cycle(%) Dimension(mm) 20''CTN 40''CTN CB-12 220-230 50-60HZ 250*220*190 2370 4800 CB-15 220-230 50-60HZ 250*220*190 2370 4800 CB-18 220-230 50-60HZ 250*220*190 2370 4800 CB-20 220-230 50-60HZ 250*220*190 2370 4800 CB-30 220-230 50-60HZ 275*230*210 2000 4100 CB-40 220-230 50-60HZ 300*290*210 2000 4100 CB-50 220-230 50-60HZ 300*290*210 2000 4100