Victron CAN-bus Temp. Sensor:
The CAN-bus Temp. Sensor is a battery temperature sensor for the Buck-Boost DC/DC converter range and is an essential accessory when the Buck-Boost DC/DC converter is connected to a LFP lithium battery.
Temperature sensing is needed when LFP lithium batteries are charged at low temperatures. The charge current to a lithium battery has to be reduced once the battery temperature drops below 5 degrees and the charge current has to stop when the temperature drops below zero.
The CAN-bus Temp. Sensor takes care of this. It measures the lithium battery temperature and sends this to the Buck-Boost DC/DC converter. The Buck-Boost DC/DC converter will reduce or stop charge when the battery temperature drops too low.
In addition to this, the CAN-bus Temp. Sensor can also be connected to the temperature sensor terminal in a Multi or Quattro, so the Multi or Quattro can reduce or stop charging when the battery temperature drops too low.
Manual:
https://www.victronenergy.com/upload/documents/Manual-CAN-bus-Temp-Sensor-EN-NL-FR-DE-SE-.pdf
