🔍 Key Concepts

• Difference between a cell and a plate group in a storage battery • How many positive and negative terminals / vent caps are normally present per cell in a Ni-Cad battery • Visual clues in the illustration that show whether this is a single cell with multiple plates or multiple cells

💭 Think About

• Look closely at the number of separate containers or partitions you can see. Do you see any internal walls that would divide the battery into distinct cells? • Count how many sets of positive/negative terminals and vent/filler caps are shown. Would multiple cells usually share one common container and vent cap, or have their own? • Consider how many complete electrochemical units (positive plate group + negative plate group + electrolyte in one compartment) are actually drawn.

✅ Before You Answer

• Verify whether the illustration shows one steel container or several separate containers inside a case. • Check if there is only one pair of terminals (one positive, one negative) or multiple pairs. • Confirm whether the multiple plates you see represent individual plates within a single cell, not separate cells.