What would be the terminal voltage and ampere-hour capacity of the battery bank if each battery was rated at 50 amp-hours and 6 volts? Illustration EL-0107

Correct Answer: Option A — 12 volts and 100 ampere-hours

Connecting batteries in series-parallel combinations increases both voltage and amp-hour capacity. Two 6-volt, 50 Ah batteries in series double voltage to 12V, and parallel grouping doubles capacity to 100 Ah, complying with 46 CFR Subchapter J emergency power installation criteria.