Curtis 803: Battery Discharge Indicator (BDI)

The Curtis 803 battery discharge indicator (BDI) combines a complete solid state battery discharge indicator, an LCD hour meter and a lift lockout into one 52 mm case. With no moving parts, this combination instrument is extremely reliable in harsh operating environments.



  • Multicolor 10-bar LED displays state of charge (5 green,3 yellow, 2 red LEDs)
  • Flashing red LED signals “energy reserve” alarm at 70% discharged
  • Double flashing red LEDs signal “empty” alarm at 80% discharged
  • Normally closed relay opens at 80% discharge for lift lockout. This unique holding relay will only lock out at the end of alift cycle
  • Recognizes improperly charged battery
  • Keys which activate LED display (Fuel gauge electronics are energized as long as they remain connected to the battery)
  • Wide range adjustable discharge profile
  • Dual reset methods in each gauge: Open Circuit Reset for vehicles that exchange batteries and Charge Tracking Reset for vehicles whose batteries remain connected to the gauge during recharge
N56 W16665 Ridgewood Dr. Menomonee Falls, WI 53051
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