🔍 Key Concepts

• Typical cell voltages for common battery chemistries used on vessels (lead-acid vs nickel-iron vs alkaline) • Difference between nominal voltage per cell and total battery bank voltage • Remembering that nickel-based cells usually have voltages between 1.0 and 2.0 volts per cell

💭 Think About

• First, recall the approximate voltage per cell for a standard lead-acid battery and compare it to the answer choices. • Think about whether nickel-iron (Edison) cells have a higher or lower voltage per cell than a lead-acid cell. • Eliminate any options that are clearly too low to be practical for a single cell or so high they are more typical of a multi-cell battery, not one cell.

✅ Before You Answer

• Verify the typical nominal cell voltage of a lead-acid battery (around 2 volts per cell) and use that as a reference point. • Check which of the answer choices falls into the normal range for single-cell nickel-based batteries (roughly around 1-point-something volts). • Rule out answers that look like a full battery voltage rather than a single cell, such as values around 6 volts.