Three things to keep in mind:

  1. When connecting batteries in series, you increase the voltage and the amp-hour capacity remains the same. (see configuration 1)
  2. When connecting in parallel, the amp-hour capacity increases and the voltage remains the same. (see configuration 7)
  3. To increase both numbers, connect multiple sets in series/parallel. (see configuration 3)

Configuration 5:

Quadruple Voltage
Double Capacity


Connection of eight matched batteries to quadruple the voltage at double the capacity. Often used in larger golf utility cars, sweepers/scrubbers, and larger EV and marine deep cycle applications or in large, long-haul trucks, RV’s, and buses for engine cranking applications where additional deep cycle capacity is needed beyond Figure 4 Configurations.