The BT-500 with IR wireless printer option for remote printing tests 12/24/36 volt starter and charging systems. Features a two line, 16 characters LCD displaying battery condition as percentage available capacity, CCA’s, state of charge voltage and good or replace status. Charging system displays real time alternator output as good or bad in addition to diode ripple. Starting system condition display holds minimum voltage drop during cranking. Includes 2 ft heavy-duty abrasion resistant cables for trucks with hard to reach battery compartments.