07-03-19, 11:20 PM
(07-03-19, 09:32 PM)mtread link Wrote: I've got a USB car charger which puts out about 2.4 amps but hardly seems to charge the phone at all. I think my home charger puts out about 5 amps which does the job quickly.
Are you sure about those figures? My Samsung fast charger puts out 5v at 2 amps. I'd have thought 5 amps would be likely to fry something!
Quote: The USB 1.x and 2.0 specifications provide a 5 V supply on a single wire to power connected USB devices.
A unit load is defined as 100 mA in USB 2.0, and 150 mA in USB 3.0. A device may draw a maximum of 5 unit loads (500 mA) from a port in USB 2.0; 6 (900 mA) in USB 3.0.
https://superuser.com/questions/690074/w...ort#690077