Xantrex BTS Battery Temperature Sensor - XC & TC2 Chargers
Battery Temperature Sensor (BTS)
Designed for use with TRUECharge2 battery chargers.
The BTS mounts on a terminal post of a battery in a bank or on the side of a battery and measures its temperature. It sends precise information to the charger or charge controller, which automatically adjusts voltage to help ensure full battery charge depending on the ambient temperature of your battery installation.