[jaredmcateer]

In my inexpert knowledge I can see a few problems, while they have probably seen potential, they have yet to prove it can scale. Then there is getting manufacturers of devices to buy in to super capacitors and even worse getting battery life obsessed consumers to accept 1/4 the life as current Li Ion batteries is better because it has nearly instantaneous recharge times.

[gizmo686]

In my experience, the reason people are obssessed with battery life is that when it runs out (which it does), then you are pretty much screwed until you can plug it in for the night.

I think that vendors could easily sell devices with a smaller capacity if they can charge in seconds. This seems like a benefit that is very clear, easy to explain, and understandable to a typical consumer, and it provides a near perfect solution to one of the major inconveniences of current phones. And, that inconvenience happens to be what people currently look to long battery life to mitigate.

[jaredmcateer]

Perhaps, I know I'd rather have a super fast charging phone that lasted a day than one that lasted 3 days and takes a long time to charge, but there are still people out there that seem to think the megapixels are the only thing that's important in a camera.

[revelation]

I think the vendors could already charge the batteries faster. A Tesla supercharger charges 40/85kWh in LiIon battery capacity in 30 minutes (from empty, it gets harder to push charge in as they get full). They use off the shelf batteries.

But the dirty little secret is of course that it's not necessary. You need one day of battery life, then people get home and charge it by their nightstand. Similar with the Tesla, it has enough range to get through five times the average American commute, and the majority of people just charge at home when they sleep.

Bandaging peoples irrational fears might simply not be a very viable business model.

[mark-r]

> Bandaging peoples irrational fears might simply not be a very viable business model.

Are you kidding? It's one of the best business models ever.

In this case I think you have it backwards. Instant charging isn't bandaging a fear, because you rightly make the point that the fear of running out of power is already covered by ensuring the device has sufficient capacity for the worst case. Indeed it will create a new fear: forgetting or not being in a position to top off the charge when necessary.

[speleding]

The high current needed for fast charging requires thick connector wires and produces a lot of heat in the battery, and also in other components of the power circuitry. The heat is the limiting factor in the charging speed for phones.

[Fargren]

Maybe you can have both a Li Ion and one of these, and you only sue the LiIon after the graphene one is depleted. That way, you can recharge quickly to a fraction of total power, and optionally wait longer for a full charge.

[jaredmcateer]

Maybe but both are going to take up space and the video isn't really clear on how much space the super-capacitor is going to need so you'll probably end up with the same problem of not having the same long life as just having the single slower charging Li Ion battery.