Xantrex Battery Temperature Sensor (BTS) f/XC & TC2 Chargers

The Xantrex Battery Temperature Sensor (BTS) for XC and TC2 chargers is a precision temperature monitoring device designed to optimize charging performance in marine and RV battery systems. By mounting directly on a battery terminal post or battery side, this sensor measures ambient battery temperature and communicates real-time data to compatible Xantrex chargers, enabling automatic voltage regulation based on environmental conditions.

Temperature-compensated charging is essential for battery longevity and full charge capacity. Cold temperatures reduce a battery's ability to accept charge, while heat accelerates internal degradation. The BTS eliminates guesswork by providing chargers with precise thermal feedback, allowing them to adjust output voltage dynamically. This prevents undercharging in winter conditions and overcharging during hot weather—critical factors for maintaining multi-battery banks common on fishing vessels and cruising sailboats. The sensor's compact design integrates seamlessly into existing installations without requiring extensive rewiring.

This accessory is ideal for serious boaters, commercial fishing operations, and liveaboard cruisers who depend on reliable battery charging in variable weather. Weekend anglers with dual or auxiliary battery setups also benefit from the protection this sensor provides. It's compatible with Xantrex TRUECharge2 and TRUECharge charger models, making it a direct upgrade path for existing marine electrical systems. Proper temperature compensation extends battery service life and ensures you maintain full power for electronics, starting engines, and auxiliary systems when it matters most.