🔍 Key Concepts

• High discharge rate performance differences between nickel-cadmium (Ni-Cd) and lead-acid batteries • How repeated charging and discharging cycles affect different battery types • What happens to capacity and lifespan of batteries under heavy load conditions

💭 Think About

• Think about which option talks about how the battery handles frequent, heavy use rather than physical size or voltage alone. • Ask yourself: under high discharge rates, what is more important—space/number of cells, voltage level, or how well the battery survives repeated heavy cycles? • Consider which choice describes an advantage that is especially true under hard, repeated discharging, not just in normal light-duty use.

✅ Before You Answer

• Identify which options focus on physical arrangement (cells, space) versus functional durability (cycles, damage). • Check which statement would matter most on a vessel where batteries are often discharged quickly and recharged frequently. • Eliminate any choice that describes something that is not unique to nickel-cadmium when compared to lead-acid.