How come mobile phones fast charge only with their respective company’s fast charger even if we use a different charger with more watts
In: Technology
It depends on the method and hardware they use in the device for fast charging.
If they use a standard (something like Qualcomm’s quick charge), then any charger supporting that would work.
Companies essentially lock it to their own chargers. They say it is for safety, as these have been tested by the company to work with the phone, but it’s probably more so that you just buy their chargers instead.
There’s more to fast charging than the amount of Watts a charger can deliver.
The charger and the charging device communicate with each other and higher voltages are used than the standard 5v
There are multiple standards which aren’t all compatible with each other.
Qualcomm has a system called Quick Charge which has versions 1 through 5.
Some manufacturers use Quick Charge, but brand it under their own name
* TurboPower (Motorola)
* Mi Fast Charging (Xiaomi/Redmi)
* Adaptive Fast Charging (Samsung)
* Etc
Other proprietary protocols not compatible with QC
* VOOC (OPPO)
* SuperCharge (Huawei)
* Dash Charge (OnePlus)
* Pump Express (MediaTek)
* Super FlashCharge (Vivo)
* Dart Charge (Realme)
* XCHARGE (Infinix)
[Wikipedia page ](https://en.m.wikipedia.org/wiki/Quick_Charge#:~:text=Quick%20Charge%20(QC)%20is%20a,supply%20and%20negotiating%20a%20voltage.)
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