Resetting the Gage to Full: What is the difference between OCR, HVR, and CTR?
OCR (Open Circuit Reset) — This method of resetting the gage to Full is used in applications where the battery is charged while disconnected from the gage. (typical of forklifts). When the battery is disconnected, charged, and then reconnected, Curtis models with OCR will reset to Full (‘jump’ to Full), IF the voltage is greater than the OCR reset level voltage. Example: 900R24BN. The “B” in this model means that the open circuit reset level is 2.09 Volts per cell. (12 cells x 2.09 = 25.1 volts); if the gage sees a voltage higher than (approximately) 25.1 volts per cell, it will reset to Full. HVR (High Voltage Reset) – This method of resetting the battery to Full is used in applications where the battery is charged while connected to the gage (typical of golf cars and scissors lifts). The gage will reset to full when the charging voltage exceeds the HVR reset level, and maintains it for 6 continuous minutes. Example: 900R36HG: the H reset level is 2.35 volts per cell (18 cells x 2.35
