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.

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Application Information


  • 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
Name Curtis 803: Battery Discharge Indicator (BDI)
Model Number Curtis 803