like sanddrag has said it does seem the V884 is not meant for high voltage uses. If you look on
www.ifirobotics.com they sell the V883, V885 and Victor HV's (High voltage up to like 48 volts) and they don't list the 884. It seems that the 884 is a "FIRST Only" part as of now and runs with "Operating Voltage 6V to 15V". if you still really want to use the FIRST Victor 884 at higher voltages contact IFI directly (info can be found on both their consumer and FIRST sites) and ask them.