How much has battery technology advanced, and where does it stand today?

battery

Recent advancements in lithium-ion batteries dominate, delivering higher energy densities, longer lifespans, and faster charging compared to earlier iterations.

New sodium-ion batteries for energy storage

Higher energy density, lower environmental impact, longer lifetime, orders of magnitude shorter charging time, less flammable, cheaper production, to name just a few of the futuristic goals of dozens of battery technology research labs. But the basic research is still going on.