Connecting multiple batteries in a parallel configuration involves linking their positive terminals together and their negative terminals together. This arrangement maintains the voltage of a single battery while increasing the overall current capacity of the system. For example, connecting two 12V batteries in this manner results in a 12V system with twice the amp-hour capacity of a single battery.
This method of configuration is valuable in scenarios demanding extended operational times or higher current outputs than a single battery can provide. Historically, parallel connections have been employed in applications ranging from emergency power systems to electric vehicles, driven by the need for reliable and sustained energy delivery. A key advantage lies in its ability to enhance system runtime without altering the voltage requirements of the connected device or circuit.