Question 6A299

Connecting cells in parallel is the method to obtain the maximum "zero-resistance" current. When cells are connected in parallel, the total voltage of the combination remains the same as that of a single cell. However, the current capacity (amp-hour rating) increases because each cell contributes its available current. Crucially, connecting internal resistances in parallel effectively *reduces* the total internal resistance of the battery bank. According to Ohm's Law (I = V/R), if the voltage (V) remains constant and the effective internal resistance (R) is minimized, the maximum current (I) that can be drawn will be significantly higher, especially under very low or "zero-resistance" load conditions. Connecting cells in series (B) adds their voltages but keeps the current capacity and internal resistance the same as a single cell for the overall pack, thus not maximizing current. Series/parallel (C) arrangements provide a balance of voltage and current but not the absolute maximum current possible from the individual cells for a given voltage.