You managed to create lithium batteries lasting for 100 years (meaning an iPhone user can scroll for a long time until the individual dies of old age without stressing if the phone will run out of battery). To put it into perspective: Nuclear Submarines can go on without refuelling for at least 50 years, so if you double that lifespan on a lithium battery: how would it shape modern electronics? What would it be like having a battery that can last an entire century?
That would mean iPhone & Android users don’t have to recharge every 10 hours or so (becomes every 876000 hours) meaning let’s say you bought an iPhone whilst in school it’s a full bar, by the time you are at old age living your golden years (it hits 5%) and throughout your entire life you forgotten that phones need to be recharged due to having a device that can last basically forever due to the battery being that powerful & having a long lifespan.
If I created a battery that didn’t need charging until 100 years later, I probably would not sell the tech to phone manufacturers like Apple. We have seen some impressive miniaturization with the technology including the batteries in terms of capacity vs. size. That came by iteration; it got better with most new models. It’s conceivable that if a battery would store a century of juice we would have maxed out development of the rest of the device. But tbh I don’t think that will happen. There will be new modems, new chips, new storage technology. But the battery would stay the same? Apple in particular would hate that. They would also prefer you buy a new device every time or every x years at least. So they’ll put a smaller one into the device and sell the wonder battery as a power bank. They will also cater to the hiker and prepper segments of the market.
Also, people born in countries with good healthcare today have a good chance of living well over 100. So they might be utterly confused at 112 when their phone suddenly shuts down.