Nanowire batteries are a type of battery that are very small, with wires made up of tiny particles that are even smaller than a strand of human hair! Nanowire batteries are used to power many of the things we use every day, like smartphones, laptops, and even electric cars. They are very helpful because they are smaller and can hold more energy than traditional batteries. The small size also allows them to charge faster. Nanowire batteries are made up of lots of tiny particles put into a special solution that helps the particles stick together. This creates a structure with lots of tiny wires that can move electric charge and store energy, like a regular battery.