A series circuit is used to increase the total potential of a battery system (also called voltage or voltage). In a series connection, however, the capacity remains the same. For example, when 30 batteries of 12.8 volts at 100 Ah are connected in a series, a battery system is created that provides 384 volts at 100 Ah. When creating a series connection, it is very important that all connected cables be the same length and thickness. In a series connection, the positive terminal of a battery is connected to the negative terminal of the connecting battery. The remaining unconnected positive (+) and negative (-) terminals must then be connected to the device that needs power. These connections are also called the “end” positive and “end” negative of circuits.
Batteries of different capacities (Ah and voltages) should never be connected to each other by series connection. Furthermore, we recommend that batteries of the same voltage and capacity, match in brand, product series and preferably production date.