Victron energy Blue Smart 12/4 Manuel page 9

The low current mode remains activated until the MODE button is
pressed again during 3 seconds.
2. BULK
Charges the battery with maximum current until absorption
voltage is reached. The battery will then be about 80%
charged and is ready for use.
3. ABS - Absorption
Charges the battery at constant voltage and with
decreasing current until it is fully charged.
See table above for absorption voltage at room
temperature.
Adaptive battery management:
The absorption time is short (minimum 30 minutes) if the
battery was (nearly) fully charged and increases to 8 hours
in case of a deeply discharged battery.
4. RECONDITION
Optional reconditioning for deeply discharged lead-acid
batteries.
Reconditioning is applicable to the charge algorithms
NORMAL and HIGH and can be selected by pressing the
MODE button one more time after selection of the required
algorithm.
When in RECONDITION mode the battery will be charged
with low current up to a higher voltage at the end of the
absorption phase.
The RECONDITION LED will be on during charging, and
will blink during the reconditioning period.
During reconditioning the maximum current is equal to 8%
of the nominal current until the maximum voltage is
reached. Reconditioning is terminated after one hour or
when the maximum voltage is reached, whichever comes
first. See table.
Example:
For a 12/15 charger: the recondition current is
15 x 0,08 = 1,2A.
5. FLOAT
Keeps the battery at constant voltage and fully charged.
6. STORAGE
Keeps the battery at reduced constant voltage to limit
gassing and corrosion of the positive plates.
Slow self-discharge is prevented by an automatic weekly
refresh of the battery with a short absorption charge.
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