Your cellphone & laptop should always be fully charged and charging

 SCIENCE from my Brooklyn Tech Days {1960} -- when I made the circuit and proved it worked.

In electronics, there is something called a rectifier circuit -- changes AC into DC -- radio waves are, for practical purposes AC waves that can be rectified.

I've mentioned this in my books, and now we have wireless charging of cellphones.

BUT, if used to its proper level of effectiveness, there is no practical reason why phones {and laptops} could not trickle charge themselves wherever there are radio ways {effectively everywhere}.

Thus, there is no rational reason why a chip the since of a pinky nail couldn't be installed in every phone and computer to keep them fully charged at all times.