Primary cell | Secondary cell |
1. In a primary cell, chemical reactions are irreversible | 1. In a secondary cell, chemical reactions are reversible |
2. When current is drawn from a primary cell, chemical energy is converted into electrical energy | 2. When current passes in a secondary cell, electrical energy is converted into chemical energy, when current is drawn from it, chemical energy is converted into electrical energy |
3. Primary cell cannot be recharged | 3.Secondary cell can be recharged |