Connecting multiple power cells side-by-side, positive terminal to positive terminal and negative terminal to negative terminal, creates a parallel circuit. This configuration maintains the voltage of a single cell while increasing the overall current capacity of the battery bank. For instance, if multiple 1.5V batteries are connected in this manner, the resulting voltage remains at 1.5V, but the available current will be the sum of the individual battery currents.
This method offers significant advantages in various applications. It allows for extended run times for devices that require a specific voltage but demand higher current than a single cell can provide. Historically, this approach has been crucial in powering larger electrical devices and systems where a sustained energy supply is essential. Its effectiveness lies in distributing the load across multiple energy sources, reducing stress on individual cells and enhancing overall system reliability.