Parallel Battery Connection:
MORE CAPACITY: Connecting two (2) or more batteries together in-parallel increases the overall capacity of your system, but your voltage remains the same. The positive terminals are connected together with the proper gauge cables and the negative terminals are connected together with the proper gauge cables until you reach the capacity needed. Unlike a series connection, the in-parallel connection does not increase the normal voltage output, but it will increase the duration of the power. Charging batteries connected in-parallel may require longer charge time.
Below you will see an example of two (2) 12v 100Ah batteries wired in-parallel creating a 12v system with 200Ah’s.
Think of this option as adding a “larger gas tank” to a car BUT you still only have the original horsepower.
With two (2) 100Ah batteries in-parallel, you have doubled your system’s “gas tank”. You can now go farther and last longer!