Figure 2-7, Battery Temperature Sensor - Magnum Energy MS Series Owner's Manual

Installation
2.4.6 Battery Temperature Sensor Installation and Wiring
The Battery Temperature Sensor (shown in fi gure 2-7) provides the inverter with precise battery
temperature information to automatically adjust the ABSORB and FLOAT charge voltage setpoints
This allows the batteries to be correctly charged under extreme temperature changes.
If the temperature sensor is NOT installed and if the batteries are subjected to large temperature
changes, the battery life may be shortened.
The BTS provided may be extended - using a RJ11 connector (female to female) and a standard
phone cable with RJ-11 connectors - to a maximum length of 40 feet. However, your inverter to
battery cable length should not exceed the recommended distance provided in Table 2-2.
To install the BTS:
1. Attach the ring terminal end of the Battery Temperature Sensor to the negative battery terminal;
see fi gure 2-5 for proper connection to the battery terminal.
2. Route the sensor's cable to the inverter following existing wire runs.
3. Connect the RJ11 connector end of the BTS cable to the yellow labeled BTS port on the inverter
(item 6 in fi gure 1-1).
Page 18

Figure 2-7, Battery Temperature Sensor

F R O N T V IE W
~2"
C a b le
S ID E V IE W
© 2009 Magnum Energy Inc
~1 "
~¾ "
0.3 7 5" d ia m e te r
~½ "