42 Freedom SW 2000 Installation Guide
Cabling and Hook-up Configurations
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 12
Batteries Connected in Series