Fast charging has finally become truly fast, Xiaomi's 100W system demonstrated

[mrk]

https://www.facebook.com/wangxiang.xiaomi/videos/337246410239405/

18V 4.5A pumped into the phone. 17 minutes to charge to full whereas the 50W competition only reaches 65% as the Xiaomi one reaches 100.

I feel this will be a stop-gap solution until Graphene batteries hit the mainstream (Samsung recently announced they have finished their development of them). Quite remarkable though and be interesting to hear how they tackled the heat generated by that much voltage/current. It's not fast charging that reduces battery health, but the heat it generates, be it wired or wireless. Which is why OPPO's Super VOOC works so well as all the heat resides in the charger block and not the phone.

 

[mrk]

It's the heat from the charger circuitry that weakens batteries the most, like with wireless fast charging too, the system generates heat. Take the heat away and you retain battery health like with Oppo's Super VOOC and so on.

Some higher end laptop batteries charge up to 100W IIRC, but they have big power bricks external to the laptop to avoid quick cell degrade.

 

[mrk]

Samsung have only been slowing dome some elements or keeping it the same since the Note 7 issues. This week the Samsung CEO made a statement that they might unlock the 25W fast charging ability of the S10 series with a firmware update, for example. Otherwise Samsung fast charging has been at 0V 1.67A since the very early days of around the S6+/edge IIRC for all flagships.


So the chipsets certainly support it, and in the past QualComm have been quoted saying that batteries engineered for fast charging are safe for exactly that.

We already have phones charging up to 40-50W anyway and they'e been fine!