🔍 Key Concepts

• Identify the type of battery shown (note the steel container, pocket plates, and gas release/vent caps). • Recall how specific gravity of the electrolyte behaves in this battery type compared with a lead‑acid battery. • Consider what happens to the terminal voltage of a storage battery between fully discharged and fully charged conditions.

💭 Think About

• Does this illustration look like a typical lead‑acid cell with transparent case and lead plates, or a different construction (pocket‑plate alkaline cell)? • For this battery type, is the electrolyte chemically used up and restored during charge/discharge, or does it mainly act as an ion carrier? How would that affect specific gravity readings? • When a storage battery goes from discharged to fully charged, what is the usual trend of its output voltage, even if the change is small?

✅ Before You Answer

• Verify whether specific gravity is a good indicator of state of charge for this exact battery type. • Decide if, at full charge, the terminal voltage should be higher, lower, or the same as when discharged. • Eliminate any choices that claim both specific gravity and voltage behave the same way from discharged to fully charged if that conflicts with how this battery actually operates.