Series 4000, 4500, VRLA AGM & OPzV GEL models – the temperature sensor should be mounted on a battery in the middle of the string or battery bank. To ensure an accurate reading of cell temperature, the sensor must be mounted below the liquid level on Flooded models and not attached to a terminal or top of the battery case as these areas are generally cooler than the internal cell. For traditional Flooded, VRLA AGM & OPzV GEL models, Rolls recommends attaching the sensor half way down the side of the battery and/or 10-12cm (4-5”) from the top of the case for the most accurate temperature reading.
Dual-Container Models – If the battery has a modular, dual-container construction, the temperature sensor must be mounted directly to the side of an internal cell. To access the cell, disconnect the terminal connections and remove the outer cover which snaps on to the case or may use small removable plastic pins. Mount the sensor to the internal cell and run the connecting cable between the case, being careful not to pinch or damage the wire when placing the cover back on. Automotive silicone is used to seal around each terminal to protect against spills, dust & debris. This may be reapplied when the case has been reassembled.