Will this charger be able to output to a computer? If so, you have the basics for an expansion pack that allows one to better match the charge curve of their cells where they can rebuild their packs for charge and discharge optimization.
Also, being a charger, can the polls be switched? Some car designs have the input/output terminals that are on the batteries, positioned in different configurations.
Sometimes positive is in the front and sometimes it is in the rear.
BTW - the Spintech magic is unbeatable. Many racers in my area look at my old batteries and motors and just wonder how the car can move that fast.