Victron energy MPPT 150/45-Tr Manuel page 10

48V battery and mono- or polycristalline panels
● Minimum number of cells in series: 144
(4x 12V panel or 2x 24V panel in series).
● Maximum: 216 cells.
Remark: at low temperature the open circuit voltage of a 216 cell
solar array may exceed 150V, depending on local conditions and
cell specifications. In that case the number of cells in series must
be reduced.
3.4 Cable connection sequence (see figure 1)
First: connect the battery.
Second: connect the solar array (when connected with reverse
polarity, the controller will heat up but will not charge the battery).
8