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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).
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
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
2
, the battery interconnects should be 120 mm
2
.
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.
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.
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.
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
12VDC
100 Ah
100 Ah
12VDC
100 Ah
100 Ah
24 V 100 Ah
Freedom SW 3K2K 230V InvChg Install Guide.book Page 57 Friday, June 20, 2014 9:11 AM