11
·
Float Charge
After the battery is fully charged in Boost voltage stage, the controller
reduces the battery voltage to Float voltage set point. When the battery is
fully recharged, there will be no more chemical reactions and all the charge
current transmits 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 battery and prevent the gassing, also
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 stage, loads can continue to draw power from the battery. In the
event that the system load(s) exceed the solar charge current, the controller
will no longer be able to maintain the battery at the Float setpoint. Should
the battery voltage remains below the boost reconnect charging voltage, the
controller will exit Float stage and return to Bulk charge.
·
Equalize Charge
WARNING: Risk of explosion!
Equalizing flooded battery
can produce explosive
gases, so well ventilation of battery box is necessary
NOTE: Equipment damage!
Equalization may increase battery voltage to the level
damaging to sensitive DC loads. Ensure that all load
allowable input voltages are greater than the equalizing
charging set point voltage.
NOTE: Equipment damage!
Over-charging and excessive gas precipitation may
damage the battery plates and activate material
shedding on them. Too high an equalizing charge or for
too long may cause damage. Please carefully review the
specific requirements of the battery used in the system.
