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5v 2Amp usb charger without handshake

iceman_LA

New Member
how risky is building a 5v 2Amp usb charger without any handshake capability? Would devices just pull the amps that they need/can handle, or am I running the risk of breaking devices?
 

rjenkinsgb

Well-Known Member
Most Helpful Member
That's fine
Normal USB wall warts / sockets are not actually "chargers" anyway, they are just 5V power supply units.

Anything connected will only draw the current it needs.

The one i use on my desk is 6A rated.


The "Charger" name is a misnomer, a leftover from earlier devices, where the battery regulation and control electronics were in the external unit.

Any device that charges from a USB socket has the actual charge control electronics in the device itself.

USB-C power units can have the facility to select different output voltages via handshaking, but the charge regulator is still in the device being charged.
 

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