Conext XW PRO 6848 6,800W 48V Installation

Boost Charging
n Boost charging allows for better utilization of flooded lead acid batteries under
moderate cycling in off-grid or grid support applications. Boost charging encourages a
short duration charging voltage—above the gassing voltage—at the beginning of the
absorption charge state. Testing has shown that boost charging improves battery
performance by providing a regular mixing of the liquid electrolyte. Boost charging
specifically discourages capacity robbing acid stratification and plate sulfation.
n Boost mode charging can be enabled by selecting the Custom battery type and by
setting the Bulk/Boost Voltage Set Point higher than the absorption voltage.
The multi-stage charge algorithm then attempts to use the higher voltage for the first
hour of the absorption stage, unless it is interrupted by the max absorption timer or
exit current threshold.
n Boost charging encourages gassing of flooded lead acid batteries.
n Boost charging is NOT recommended for AGM, GEL or any other electrolyte-limited
and/or valve-regulated sealed battery application.
n Boost charging may result in higher than normal water consumption. However, the
benefits of boost charging are likely to be greater than the extra watering effort. Check
battery water levels at least once per month.
n Boost charging has maximum benefit when used on batteries that experience
moderate cycling. An unoccupied cottage, for example, where batteries are full the
majority of the time may not benefit from boost charging, especially if battery watering
is difficult.
n For equalize charging, a custom Boost charge profile can be configured if the equalize
method is not periodically used. Boost charging occurs in the first hour of the
absorption stage. It allows for a higher constant voltage than absorption voltage to
encourage a “mini equalize” each time the battery is charged.
n The boost voltage is defined by the Bulk/Boost Voltage Set Point setting.
The Conext system will still allow manual equalize charging when the boost
absorption voltage is implemented. This is for advanced users only who pay strict
attention to battery maintenance and have an appropriately vented and protected
battery installation. Consult your battery manufacturer for appropriate voltages.
Configuration Conext XW Pro Owner's Guide
990-91227A-01 This document is intended for use by qualified personnel 67