Button cells have the same function as batteries. They both have the same function of making your device work by providing them with enough energy. Although the devices for batteries and button cells will vary, you will get to read that in the product’s specifications list. Most of the devices for cells are portable ones, such as wristwatches and pocket calculators. They are also functional in products like hearing devices, children’s toys, remote control, and many others. It is solely upon the manufacturer whether he makes the device apt for big batteries or small button cells. As we have seen, these cells have longer durability and shelf life than your torch big batteries. We hope this answers your questions about button cells operation and functioning.