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> 99 WHr. Fast charging.

> ability to fast charge in minute

Even with a bulky 200W charger you'll need at least half an hour to charge a 99Wh battery.



Fair enough. Charging for 1 hour and then being able to use the laptop for a couple of days still would be amazing.


Would love to see ~500 A capable charging connector and wires in a laptop for a typical 3S/2P pack. It would be an interesting curiosity. :D


We really need an EV-like fast charger standard for electronics.

I want to dump 1000W in to charge the battery as fast as possible. Lose the heat through boiling water or something I don't care.


> We really need an EV-like fast charger standard for electronics.

We already have it, the fastest charging phones charge their batteries faster than the fastest charging EVs.

Battery charge and discharge rate generally scales linearly with capacity, given the same battery technology twice as much battery should generally be able to handle twice as much energy in either direction. For the sale of comparison we divide the charge rate by the capacity to get a "C-Rate" where 1C is defined as the rate that would fully drain or charge the battery in one hour. For an EV with an 80kWh battery pack 80kW would be 1C, 160kW 2C, etc.

The fastest charging EVs on the market right now all peak in the 2.5-3C range, with the Hyundai-Kia e-GMP cars taking the lead even with a lower overall peak wattage due to their smaller batteries. The Lucid Air, Tesla Plaid, and Porsche/Audi siblings all hit higher watt numbers but have significantly larger batteries so they have an easier time doing that.

A modern cell phone with fast charging can be well above 5C. The wattage numbers are thousands of times lower, but so are the capacities. The fastest charging phone I can find right now claims 300 watts and has demonstrated a bit over 280 from the wall which would imply around 260 reaching the device. In to a 4100mAh battery, which assuming standard chemistry is 4.2v nominal means 17.22 watt hours, so 260 watts would be just over 15C. A Tesla P100D would need to be accepting 1.5 megawatts to match that performance.

Hope that puts it in to perspective for you. The fact that phones exist that can charge at hundreds of watts is absurd already, without some serious advances in both battery and wiring tech we are not getting significantly faster than that.



Which is why most research in batteries has focused on improved high porosity anodes to solve exactly that problem.[1]

For an EV the power use would be excessive, but 1000W into a phone that can get you to 80% capacity in that time is more then enough.

[1] https://www.theguardian.com/environment/2021/jan/19/electric...




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