Operation manual
Page 9 of 37
2.5
Handling the battery modules
2.5.1
Information on the sonnenModule 4 battery modules:
Figure 1: sonnenModule4 battery module
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The battery modules have a nominal voltage of 102.4 VDC and but operate in
series which raises the operating voltage above 120 VDC resulting in the
application of DVC C.
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The battery modules are utilising high-performance Lithium-Iron-Phosphate (LFP)
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The battery modules contain no metallic Lithium.
The battery modules installed in the storage system are protected by
multiple protective devices and can be operated safely. Despite their
careful design, the battery cells inside the battery modules may corrode or
experience thermal runaway in the event of mechanical damage, heat or a
fault.
This can have the following effects:
High heat generation on the surface of the battery cells.
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Electrolyte may escape.
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The escaping electrolyte may ignite and cause an explosive flame.
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The smoke from burning battery modules can irritate the skin, eyes
and throat.
Therefore, proceed as follows:
Do not open the battery modules.
Do not mechanically damage the battery modules (pierce, deform, strip
down, etc.)
Do not modify the battery modules.
