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calculate the time of constant voltage working. When the accumulated time reach to 3 hours, the
charging mode will turn to Float Charging.
2) If the controller time is not adjusted, the controller will equalize charge battery once every
month following the inner time.
C) Float Charging
After the Constant voltage stage, the controller will reduce charging current to Float Voltage setpoint. This
stage will have no more chemical reactions and all the charge current transforms into heat and gas at this
time. Then the controller reduces the voltage to the floating stage, charging with a smaller voltage and
current. It will reduce the temperature of the battery and prevent the gassing and charging the battery
slightly at the same time. The purpose of Float stage is to offset the power consumption caused by self
consumption and small loads in the whole system, while maintaining full battery storage capacity.
In Float charging stage, loads are able to obtain almost all power from solar panel. If loads exceed the
power, the controller will no longer be able to maintain battery voltage in Float charging stage. If the
battery voltage remains below the Recharge Voltage, the system will leave Float charging stage and return
to Bulk charging stage.
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