FLEXmax Series Charge Controllers (CC). These charge controllers offer an
efficient, safe, multi-stage recharging process that prolongs battery life and assures peak performance
from a PV array.
Each charge controller is designed to seamlessly integrate with other OutBack components and can
be remotely monitored and configured (up to 1000 feet or 300 meters away) using the optional
OutBack Power Technologies system displays.
The FLEXmax Charge Controllers use continuous Maximum Power Point Tracking (MPPT), which seeks
out the maximum power available from a PV array and uses it to recharge the batteries. Without this
feature, the PV array does not operate at the ideal voltage and can only operate at the level of the
battery voltage itself. (See page 101 for a description of MPPT.) Each charge controller continuously
tracks the array’s maximum operating power.
The FLEXmax Series has two models available:
FLEXmax 80: 80 amps maximum continuous output current (up to 40°C without thermal derating)
FLEXmax 60: 60 amps maximum continuous output current (up to 40°C without thermal derating)
Both models have the following features:
Supports 12, 24, 36, 48, and 60 Vdc battery voltages
Backlit LCD display screen with 80 characters (4 lines, 20 characters per line)
Last 128 days of operational data are logged for review
Voltage step-down capability allowing a higher PV array voltage configuration
Manual and auto-equalize cycle