if he means that, I do not see it happening so easily,
Energy storage in a superconductor is done in the form of magnetic field, a superconducting induction coil (SMES), whose density of energy storage per kilogram is highly inferior to a capacitor and a supercapacitor, which stores energy in the form electric fields, and whose density of energy storage per Kg in turn is very inferior to chemical batteries.
The magnetic fields are charged and released quicker in inductors than in capacitors (and than in chemical batteries), also the material have a longer life, and the rate of self-discharge is sightly inferior in superconducting inductors, nevertheless the density per kilogram -and to administrate such sudden energy release- limits very much the applications.
If LK99 becomes true, and is improved much (as the electrical current in the paper is limited to milliamperes range), at middle term I don't think on it happening.
If at future is achieved superconducting through nanowires, with inferior weight to batteries, may be, but in a car for example would need the added weight of metallic "magnetic shields" for health security.
IMHO, I don't see it beyond stationary applications.
This is consistent with my understanding as well. I don’t see instant battery charge being something that this enables. Current battery charge rates are limited by battery structure degrading more rapidly at high charge/discharge rates, so this wouldn’t really have any direct effect.
