Epever MPPT Tracer1206AN User Manual page 10

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CAUTION
Some battery types benefit from equalizing charging, stirring electrolytes, balancing battery voltage, and
accomplishing chemical reactions. Equalize charging increases the battery voltage to make it higher than
the standard complement voltage, gasifying the battery electrolyte.
If the controller automatically controls the next charge for equalizing charging, the equalizing charging
time is 120 minutes. Equalize charge and boost charge are not carried out constantly in a full charge
process to avoid too much gas precipitation or overheating of the battery.
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CAUTION:
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C) Float Charging
After the constant charging stage, the controller will reduce the battery voltage to the float charging
preset voltage by reducing the charging current. During the floating charge stage, the battery is charged
weakly to ensure that the battery is maintained in a fully charged state. In the float charging stage, loads
can obtain almost all power from the solar panel. Suppose loads' power exceeds the solar array's power.
In that case, the controller will no longer maintain the battery voltage in the float charging stage. When
the battery voltage goes lower than the set value of the boost recharge voltage, the system will exit the
float charging stage and enter the bulk charging stage again.
Equipment damage!
Equalization may increase battery voltage to the level that damages sensitive
DC loads. Verify that the load's allowable input voltages are greater than the
equalizing charging setpoint voltage.
Over-charging and excessive gas precipitation may damage the battery plates
and activate material shedding on them. Too high an equalize charging or for too
long may cause damage. Please carefully review the specific requirements of
the battery used in the system.
Due to the installation environment or load work, the system may not stabilize
the battery voltage at a constant voltage. The controller will accumulate the time
when the battery voltage is equal to the set value. When the accumulative time
is equal to 3 hours, the system will automatically switch to float charging.
If the controller time is not adjusted, the controller will equalize charging
following the inner time.
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