Curtis 906D Battery Meter for Electric Golf Cart

CURTIS Battery Discharge Meter models 906D36BWBANV / 906D48BWBANV are used as the battery discharging level indicator for electric vehicle lead-acid batteries.

Typical application: golf cart (Club Car, E-Z-GO, Star EV, Eagle, Yamaha, etc.), electric forklift, tow tractor, mobility vehicles ...

Overview

CURTIS battery discharging meter models 906D36BWBANV / 906D48BWBANV are inexpensive, one piece, easy to install battery fuel gauges. CURTIS 906 type meter is completely solid state and provides a reliable, accurate, and easy to read display of battery state-of-charge. Model 906D36BWBANV / 906D48BWBANV are equipped with a DIN case (rectangular case) and a printed circuit board mounted module for custom dash panel applications.

• The Output Signal option causes the voltage on pin 3 to drop from 5 to 0 volts at 80% discharge. It can be used to signal another component or to allow for the disabling of a specified vehicle function, insuring against abusive deep discharge conditions. The Output Signal can also be used to drive the CURTIS 1178 Relay Module.
• Special models and custom panels are available. For more details, please see the 906 Meter Datasheet (PDF format).

Specifications

• Manufacturer: CURTIS
• Model: 906D36BWBANV / 906D48BWBANV
• Voltage Options (Volts): 36V / 48V
• Operating voltage: +/-25% of nominal voltage
• Display: 10-digit, LED
• Operating temperature: -40°C to +85°C
• Storage temperature: -50°C to +90°C
• Shock & Vibration: Meets SAE J 1378

Features include:

• All principal circuits are integrated in a single chip for long-life reliability.
• A 10-bar LED displays the state-of-charge successively, bar by bar, from full to empty.
• At 70% depth of discharge, a flashing LED signals an "energy reserve" alert.
• At 80%, alternately flashing LEDs provides an "empty" status warning.
• Model 906D36BWBANV / 906D48BWBANV is compact and easily installed in panel cutouts as small as 45.3 mm x 22.3 mm ±0.1, with as little as 35 mm behind panel clearance needed.
• Recognizes improperly charged battery.
• Keyswitch activated LED display (state-of-charge is monitored as long as 906 is connected to battery).
• Memory allows gauge to recall state-of-charge whenever battery is disconnected.
• Three possible reset methods:
  • Open Circuit Reset (OCR): Upon reconnection of a battery the gauge will reset if it measures 2.09 volts/ cell or higher (example "B" profile) (for units with memory option).
  • High Voltage Reset (HVR): Gauge must measure >2.35 volts per cell for 6 continuous minutes during charging (example "B" profile).
  • Charge Tracking Reset (CTR): Display tracks charge level during opportunity charging (requires gauge to be connected to battery when charging).