Fact 1: Abattery converts chemical energy into electrical energy.

Fact 2: Battery life is several months for a AA lithium cell.

Given the two facts above, answer the question "what converts chemical energy into electrical energy" with the following options: 
- sensory neurons
 - AA lithium cell
 - rotten food
 - Firecrackers
 - an engine
 - deoxyribonucleic acid
 - magnets
 - plants


 

  AA lithium cell       