Laptop charger for Fairphone 3

My new Fairphone3 is designed to charge with a version QC 3.0 compatible charger with Output: 5.0V ๐Œ‚ 3.0A/9.0V ๐Œ‚ 2.0A/12.0V ๐Œ‚ 1.5A 18.0W MAX.
I have a 65W laptop charger Output: 20V๐Œ‚ 3.25A/15V ๐Œ‚ 3.0A/9.0V ๐Œ‚ 2.0A/5V ๐Œ‚ 2A. Is it safe to use it?
(the laptop charger is the only charger I have with USB-C)

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Looks like a match. 9x2=18W


The laptop charger likely uses the USB PD protocol instead of QC 3.0, meaning it wonโ€™t do 9V but should charge at 5V. Itโ€™s safe to connect it.


I have this kind of laptop charger : Apple Adaptateur secteur USB-C 96 W.
Do you think itโ€™s gonna work too? Thx

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Pretty surprising for me finding this post about someone else using his mobile computerโ€™s power supply for his mobile having USB-C.
Yes, sure USB-C had a bad start with many incompatibilities and devices busting into flames or at least melting power sockets frying devices. Things got a bit better meanwhile.
The initial idea of USB-C was to even have a higher universality and compatibility than with ยตUSB. But there are always scammers simply gluing together some left over parts and selling them. Some of them even come from Asia :thinking:.
If itโ€™s not from the Fruit company but from another manufacturer caring about broadly more common official standards itโ€™s absolutely save to use an available โ€œcertifiedโ€ USB-C charger for whatever device having the same socket type.
If itโ€™s for home use surely any proper charger (speaking of fixed cables like for notebooks) should work fine unless one manufacturer did not care about the official standard.

Itโ€™s different with cordless chargers as the cable also can make a difference if charging will work properly or not.
I will also start off with my 65 watts Lenovo psu for my FP4.
Somehow the wrong logic persists among many users believing that a charging unit listed with a higher current value will blow a connected device. According to electrical rules and physical laws, generally spoken - itโ€™s the voltage pushing current through any device. Current it the consequence of voltage. No current without voltage (neglecting L | C elements). Usually itโ€™s the voltage that has to match, not the current.
If there is more intelligence involved like in USB-C thereโ€™s some type of negotiation between the charger and the end device. If thereโ€™s no proper negotiation achieved the lowest or no charging level will be established. Of course this process only works securely if both partners (+ cable) are based on standardized designs.

Apple chargers tend to be compatible with devices of other brands nowadays so I donโ€™t expect much trouble.

Itโ€™s a USB PD charger, so likely no โ€˜fast chargingโ€™ on the FP3 as it doesnโ€™t support this protocol, but normal charging should work (at most 5V * 2.4A = 12W; the phone will refuse to draw more power if there is no QuickCharge-compatible charger detected.)

It looks like the FP4 might support USB PD, allowing fast charging from a laptop charger.