The Red Box range of battery, aircraft start units are the ideal solution for starting the majority of DC aircraft. They are designed to start aircraft from the very smallest up to the largest business jets. There are a range of voltages (12V, 24V and 28V) and power capacities available. For some small aircraft the requirement is for a 12V unit. Redbox manufacture 12V units in 3 sizes, although any aircraft that needs 12V only needs to use our smallest RB25A 12V unit, the larger units are only really for multiple starts