Battery Settings - Victron energy SmartSolar MPPT RS 450 100 Manual

3.10.2. Battery settings

Battery voltage
The RS is fixed to 48V, and is only available for 48V systems.
Max charge current
Allows the user to set a lower maximum charge current.
Charger enabled
Toggling this setting turns the Solar Charger off. The batteries will not be charged. This setting is intended only for use when
carrying-out work on the installation.
Charger settings - Battery preset
Battery preset allows you to select the battery type; accept factory defaults; or enter your own preset values to be used for
the battery charge algorithm. The Absorption voltage, Absorption time, Float voltage, Equalisation voltage and Temperature
compensation settings are all configured to a preset value - but can be user-defined.
User-defined presets will be stored in the preset library - in this way installers will not have to define all the values each time they
are configuring a new installation.
By selecting Edit Presets, or on the Settings screen (with expert mode on or not), custom parameters can be set as follows:
Absorption voltage
Set the absorption voltage.
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. Note: make sure to disable
the tail current setting to make the same absorption time every day. The tail current could end absorption time sooner if the
battery current is below the threshold. See more information on the tail current setting section below.
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 (12 V battery values used - Multiply Battery voltage by 4
for 48V ):
Battery voltage Vb (@start-up)
Vb < 11.9 V
> 11.9 V Vb < 12.2 V
> 12.2 V Vb < 12.6 V
Vb > 12.6 V
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Isolated SmartSolar MPPT RS
Multiplier Maximum absorption times
x 1 06:00 hours
x 2/3 04:00 hours
x 1/3 02:00 hours
x 2/6 01:00 hours
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