SKU: CW56248
UPC: 647912107443
MPN: 76-0022-00
The Xantrex Battery Temperature Sensor (BTS) for Freedom 458 Series is a dedicated replacement sensor engineered to monitor and regulate battery temperature in the Freedom 458 inverter/charger system. This sensor is essential for users who operate multi-battery banks in RVs, marine vessels, off-grid solar installations, or backup power systems where accurate thermal management directly impacts battery longevity and charging efficiency. By maintaining real-time temperature feedback to the inverter/charger unit, the BTS prevents thermal runaway and optimizes charge profiles across varying climates and load conditions.
The sensor features a generous 15-foot cable that allows flexible mounting either on a terminal post of a battery within a multi-cell bank or on the exterior side wall of the battery enclosure, accommodating both compact and distributed battery configurations. This extended reach eliminates the need for additional cabling or custom wiring extensions, ensuring the thermistor captures accurate ambient and surface temperatures near the actual battery chemistry. The design integrates seamlessly with the Freedom 458 charger's internal temperature compensation algorithm, which automatically adjusts float and bulk charge voltages to prevent overcharging in hot conditions and cold-soak undercharging in winter environments.
This replacement sensor is ideal for technicians and system owners performing preventive maintenance, upgrading aging sensor arrays, or replacing units damaged by vibration or environmental exposure in harsh marine or industrial settings. Compatible exclusively with the Xantrex Freedom 458 inverter/charger platform, the BTS ensures that lithium iron phosphate (LiFePO₄), absorbed glass mat (AGM), and flooded lead-acid battery banks operate within manufacturer-specified temperature windows. Installation is straightforward—secure the sensor to the designated battery terminal or enclosure using the provided mounting hardware, then plug the connector into the corresponding sensor port on the Freedom 458 unit.
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