Charge your phone in less time than it takes to find your charger.
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That’s a 13C charge rate, a normal lithium battery would get very hot and puff up, possibly even catching on fire.
To safely charge at that rate, you need a battery that is specifically designed for it. High speed charging will probably be a lot more common when phones start using solid state batteries though.
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Super capacitors are great for when high charge or discharge rates are needed. They can be charged in seconds. Unfortunately the energy density is significantly worse than batteries and they self discharge in days.
If a typical phone was super capacitor powered, it would weight 5kg and be bigger than a 1980’s Motorola.
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Not really. Current phone batteries has limited life cycles based on full charge and discharge, that’s why it’s recommended to not go to 0% or 100% if you want to prolong the life of the battery. The speed doesn’t really impact the health, assuming the phone has a way to dissipate the heat generated.
everything impacts the lifespan and thermal load will be a big one, as well as charge rate. those recommendatiuns take a very complex set of variables and simplify it into a balance of memorable and useful.
