Connecting the Battery Temperature Sensor

•Attaching the sensor to the side of the battery using the self-adhesive backing also provides good results in most situations.

WARNING: Energy and Explosion Hazard

Review the “Important Safety Instructions‚” on page i.

Mounting to the Negative Battery Terminal

To mount the sensor on the negative battery terminal:

See Figure 5.

Figure 5. BTS Attached to Negative Battery Terminal

1.Decide which battery is to be monitored.

When all battery banks are located in the same compartment, select the battery that requires the most frequent charging (in a boat or an RV, this is usually the “house” battery). Where a battery is located in a separate compartment from other batteries, and where temperatures are constantly high (as in an engine room), it is a good idea to monitor this battery to keep it from being overcharged as a result of its constant high temperature. In this situation, the cooler battery bank will be slightly undercharged since it will be at a lower temperature than the battery being monitored, but this procedure will prolong the warmer battery’s life.

2.Switch off all devices operating from the battery, or open the battery switch, if present, to disconnect the battery.

3.If the charger has been operating, wait ten minutes for any explosive battery gasses to dissipate.

4.Remove the nut that secures the existing negative DC wire to the battery.

5.Move or reorient the existing negative DC wire so there is a flat surface on which to seat the battery temperature sensor mounting plate. You may need to bend the ring terminal and/or wires downward to allow the sensor to seat on the top surface of the upper ring terminal.

6.Mount the sensor directly on top of the negative DC wire terminal, as shown in Figure 5, and tighten the terminal nut firmly.

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Prosine Installation & Operation Guide