Float Voltage - Victron energy MPPT 150/60-MC4 Manual

Adaptive absorption time
Select with adaptive absorption time or fixed absorption time will be used. Both are better explained
below:
Fixed absorption time: The same length of absorption is applied every day (when there is enough
solar power) by using the maximum absorption time setting. Be aware that this option can result in
overcharging your batteries, especially for lead batteries and system with shallow daily discharges.
See your battery manufacturer for recommended settings.
Adaptive absorption time: The charge algorithm can use an adaptive absorption time: it automatically
adapts to the state of charge in the morning. The maximum duration of the absorption period for the
day is determined by the battery voltage as measured just before the solar charger begins operation
each morning (12V battery assumed):
Battery voltage Vb (@start-up) Multiplier Maximum absorption times
Vb < 11.9V
> 11.9V Vb < 12.2V
> 12.2V Vb < 12.6V
Vb > 12.6V
The multiplier is applied to the maximum absorption time setting and this results in the maximum
duration of the absorption period used by the charger. The maximum absorption times shown in the
last column of the table are based on the default maximum absorption time setting of 6 hours.
Maximum absorption time (hh:mm)
Set the absorption time limit. Only available when using a custom charge profile.
Enter the time value in the notation hh:mm, where hours are between 0 and 12; and minutes are
between 0 and 59.

Float voltage

Set the float voltage.
Re-bulk voltage offset
Set the voltage offset that will be used over the float voltage setting that will determine the threshold
that the charge cycle will restart.
E.g.: For a Re-bulk voltage offset off 0.1V and a float voltage setting of 13.8V, the voltage threshold
that will be use to restart the charge cycle will be 13.7V. In other words, if the battery voltage drops
below 13.7V for one minute, the charge cycle will restart.
x 1 06:00 hours
x 2/3 04:00 hours
x 1/3 02:00 hours
x 1/6 01:00 hours