Which type of battery is known for being rechargeable?

• A. primary cells
• B. secondary cells
• C. disposable cells
• D. alkaline batteries

Answer: (B)

Secondary cells are known for being rechargeable batteries. Unlike primary cells, which are designed for a single use and cannot be recharged, secondary cells can undergo multiple cycles of charging and discharging. This makes them ideal for a wide range of applications, from everyday electronics to larger systems like electric vehicles and renewable energy storage.

Secondary cells include popular types such as lithium-ion batteries and nickel-cadmium batteries, which have the ability to retain a considerable amount of energy and can be reused numerous times before their capacity diminishes. This characteristic not only promotes sustainability by reducing waste but also offers cost savings over time since users can recharge the batteries instead of purchasing replacements frequently.

The other options, such as primary cells, disposable cells, and alkaline batteries, refer to types of batteries that are generally used once and then discarded, illustrating their limited lifespan in comparison to secondary cells.