Battery Management; Battery Use By Systems For Increased Self-Consumption - SMA SUNNY BOY STORAGE 2.5 Operating Manual

4 Product Overview
4.6

"Battery Management"

4.6.1

Battery Use by Systems for Increased Self-Consumption

Figure 5: State of charge ranges of the battery in systems for increased self-consumption without battery backup
Range Parameter
A Self-consumption range (SlfCsmp)
B Range for maintaining battery state of
charge (PVRes)
D Minimum width of deep-discharge protec-
tion range (BatRes)
E Lower limit of the deep-discharge protec-
tion range for disconnection (ProtRes)
24 SBS25-1VL-10-BE-en-13
SOC
100 %
0 %
A
B
D
E
Battery inverter behavior
The battery inverter uses the batteries within
this range for increased self-consumption.
The battery inverter checks the current SOC
every 24 hours. If the SOC is in range D,
the battery is recharged from the utility grid
until the upper limit of range B is reached. If
the utility grid is not available, the batteries
cannot be recharged.
The battery inverter recharges the con-
nected batteries. The recharging process
does not stop until range A is reached.
If the utility grid is not available, the battery
inverter cannot be switched on to check the
SOC of the battery. The battery inverter
and the battery are switched off.
When this range is reached and the utility
grid is available, the battery inverter
charges the battery from the utility grid until
range A is reached.
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Operating manual