State two disadvantages of primary cells over secondary cells?

1. Limited lifespan: Primary cells have a limited lifespan and can only be used until their chemical reactions are exhausted. Once they are depleted, they cannot be recharged or reused.

2. Cost: Primary cells are typically more expensive than secondary cells in the long run, as they need to be replaced once they are used up. This can result in higher overall costs for devices that require frequent battery changes.