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If the elapsed time of absorption stage is over setting value for C-V charging time, it
will also transfer to Float stage.
3)
Float Stage
After the battery is fully charged in the Absorption stage, the controller will reduces the
battery voltage to the setting point of Float voltage.
Once in Float stage, constant-voltage regulation is used to maintain battery voltage at
setting point of float voltage.
Float timeout
If the battery voltage remains lower than the Float voltage for 30 minutes, the
controller will return to Bulk charging stage.