Which of the following statements concerning...

🔍 Key Concepts

• Difference between lead-acid and nickel-cadmium (Ni-Cd) batteries – especially the type of electrolyte used • Safe mixing rule for acid and water in lead-acid batteries and whether that applies to Ni-Cd batteries • Typical cell voltage for a nickel-cadmium battery compared with a lead-acid cell

💭 Think About

• First, recall what kind of electrolyte is used in a Ni-Cd battery: is it an acid or an alkaline solution? How does that affect any "add acid to water" type rule? • Think about the usual nominal voltage per cell for Ni-Cd batteries used in many applications. Is it closer to 1.2 volts, 1.5 volts, or nearly 2 volts per cell? • Ask whether it sounds realistic or necessary to replace the electrolyte of an idle Ni-Cd battery every month; what would that imply about normal maintenance practices?

✅ Before You Answer

• Verify whether Ni-Cd batteries use sulfuric acid or a potassium hydroxide (alkaline) electrolyte. • Compare the stated 1.85 volts per cell with the typical charging or nominal voltage for Ni-Cd vs lead-acid cells. • Evaluate if frequent electrolyte replacement is a standard maintenance step for Ni-Cd batteries in marine service.

Which of the following statements concerning a wet cell Nickel-Cadmium battery is true?

When mixing the electrolyte always add acid to the water.

When mixing the electrolyte always add water to the acid.

Nickel-Cadmium batteries should be charged with a voltage of approximately 1.85 volts per cell

The electrolyte of an idle Nickel-Cadmium battery must be replaced monthly to maintain battery condition.

🔍 Key Concepts

💭 Think About

✅ Before You Answer