Owner's Guide

Figure 3 Two-stage Battery Charging Cycle
Battery Temperature Compensation
The Battery Temperature Sensor (BTS) provides temperature-compensation for battery
charging. With the BTS installed, the charge controller adjusts the charging voltage as a
function of the temperature of the battery to optimize the charging characteristics and
help prolong battery life. The BTS also provides over-temperature protection for the
batteries.
The BTS plugs into the BTS RJ-11 port located inside the wiring compartment of the
charge controller. See “Installing the Battery Temperature Sensor” in the Conext MPPT
80 and MPPT 100 Solar Charge Controller Installation Guide.
Figure 4Battery temperature sensor
If a BTS is not installed, the voltage settings for charging are based on one of three
temperature settings (Cold, Warm, or Hot) available on the Charger Settings menu. See
Configuring Battery Characteristics and Battery Charging on page 31.
If there are multiple charge controllers and one or more Conext XW+ or Conext XW Pro
Inverter/Charger connected to the Xanbus network, then only one BTS is required per
battery bank. All networked Xanbus devices share battery temperature information. If
there are multiple battery banks and more than one BTS is used within the system, then
Introduction Conext MPPT 80 and Conext MPPT 100 Owner’s Guide
990-6214B This document is for use by qualified personnel 26