Battery Cabling And Hook-Up Configurations; Battery Series Connection - Xantrex Freedom SW 230V Installation Manual

Battery Cabling and Hook-up Configurations

Several smaller batteries can be connected to create a battery
bank of substantial size. You can connect batteries in series
(see "Battery Series Connection" on the right) or series-
parallel (see "Battery Series-Parallel Connections" on the
next page).
To make a larger battery bank, connect individual batteries
with heavy cables. The actual size of the cable depends on
whether the batteries are connected in parallel or series.
Generally, the cable should not be smaller than the inverter
cables—if the main cables are 120 mm
interconnects should be 120 mm
The best configuration is to connect the batteries in series-
parallel. This requires additional cables, but reduces
imbalances in the battery bank and can improve the overall
performance. Consult your battery supplier for more
information regarding the hook-up configuration required for
your system.
62
2
, the battery
2
.

Battery Series Connection

When batteries are connected with the positive terminal of
one battery to the negative terminal of the next battery, they
are connected in series. In a series configuration, the battery
bank has the same Ah rating of a single battery, but an overall
voltage equal to the sum of the individual batteries. See
below.
Figure 20 Batteries Connected in Series
Freedom SW 230V Installation Guide