Quantum battery charges a million times faster than it discharges
Scientists have developed a prototype quantum battery capable of charging almost instantly. Although the technology is still in its early stages, the initial results indicate a major breakthrough in energy storage.
The key innovation lies in its charging mechanism. The battery is wirelessly charged using a laser within femtoseconds, while it can store energy for nanoseconds. This means it takes nearly a million times longer to discharge than it does to charge—an extraordinary efficiency ratio.

However, the current prototype has a very small capacity, measured in just a few billion electron volts. While this may sound significant, in practical terms it is roughly equivalent to the energy of a moving insect. Despite its limited capacity, the prototype successfully completes a full cycle of charging, storing, and discharging.
Researchers believe this technology could have wide-ranging applications in the future, including quantum computing, electric vehicles, and advanced electronics. It may even enable remote charging of devices using lasers.
The next major challenge is to extend the energy storage duration and increase capacity, which would bring quantum batteries closer to real-world commercial use.
Source: newatlas.com