Answer:
chemical energy to electrical energy
Step-by-step explanation:
The type of energy stored in a battery is chemical energy.
A battery-powered flashlight gives light when switched-on, during this process the chemical energy stored in the battery is converted into electrical energy or light energy. When the flashlight is switched off, we convert the electrical energy back to chemical energy.
Therefore, the energy conversion that occurs in a battery-powered flashlight is chemical energy to electrical energy or electrical energy to chemical energy.