Battery Temperature sensor

A battery temperature sensor is a little tag that you glue to the side of one of your batteries to inform the inverter or the charge controller of the battery temperature so they can adjust the charging current. If a battery bank gets too hot during charging the electrolyte will boil off the water quickly which can lead to destruction of the battery. Also, the charging parameters change subtly when the battery bank temperature changes.

Because both the inverter and the charge controller have an input for one of these I added two sensors to our system.