The wide range of external fan alternators produced by Jumps caters to 12 volt and 24 volt systems, with a charging capacity from 27 amps to 140 amps. The units are structurally robust and undergo rigorous testing, all of which go a long way in assuring customers of high product efficiency and an extended product life cycle.Jumps has expanded its range of alternators by adding Internal Fan Alternators and Vacuum Pump Alternators to its portfolio. These are used in contemporary vehicles made in Europe and America. The range also includes alternators fitted with Clutch Pulleys.