The first batteries that were made were nothing like todays batteries. The guy that made the battery was Alessandro Volta. He found that by stacking copper and zinc with a paper with a salt water soulution between the two it made the battery.We use batteries in our every day life. without batteries life would be way different. When a device is connected to a battery a light bulb or an electric circuit. Chemical reactions occur on the electrodes that create a flow of electrical energy to the device.
Batteries are one of the biggest limitations in the advancement of wearable technology. While they continue to improve slowly, they’re still a significant constraint as we try to make them last longer or make them smaller.