With modular systems on the rise, phones and tablets will be able to use the same parts in different brands of technology. I foresee a standardisation of batteries. And my next idea anticipates it with a technology parts sharing society;
Battery walls are vending machines with charged batteries. When you enter your old, you get a ‘new’, charged one. Every battery that gets returned gets checked on optimal life expectation. If it’s below a certain threshold, it will be recycled.
The business model works on very small subscription fees & a transaction cost. It could be placed at entrances of business parks, in office buildings, on parkings next to highways, high traffic consumer places, etc…