Used as battery charge / discharge meter, CURTIS 906 state-of-charge gauges are widely applied by golf cart and electric forklift makers. CURTIS 906 meter is a simple and effective BDI (battery discharge indicator). Typical model: 906T48HNDAO, 48V with CURTIS logo. Overview Model 906 is an inexpensive, one piece, easy to install battery fuel gauge. It is completely solid state and provides a reliable, accurate, and easy to read display of battery state-of-charge. Model 906 is available in six panel mount packages 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).
* 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 906 is compact and easily installed in panel cutouts as small as 36.8 X 24.1 mm, with as little as 35 mm behind panel clearance needed, see dimensions of various case styles. * 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).