Slow charging cables

[Casey Woodruff]

I'm new to this forum, and I think this is the right place to ask. Does anyone know of any USB-A (regular) to USB-C cables that **limit** the amperage coming through? I'd like to run my phone through a slow cable over night. This is inspired by his video linked below. I know this isn't a huge deal or anything, but with overnight charging, why *shouldn't* I do things slowly?

 

 

[williamcll]

Nameless cheap usb cables normally gives off 5V 0.8A power

[Casey Woodruff]

2 minutes ago, williamcll said:

Nameless cheap usb cables normally gives off 5V 0.8A power

Can they be trusted to give safe, consistent power, though?

[Enderman]

Cables do not limit current.

[williamcll]

6 minutes ago, Casey Woodruff said:

Can they be trusted to give safe, consistent power, though?

heck no

 

6 minutes ago, Enderman said:

Cables do not limit current.

False, poorer quality cables will limit how much power a charger can provide, for example a cable from a galaxy S3 won't give as much power as a motorola G4 Plus' cable

[Enderman]

5 minutes ago, williamcll said:

heck no

 

False, poorer quality cables will limit how much power a charger can provide, for example a cable from a galaxy S3 won't give as much power as a motorola G4 Plus' cable

You might want to look up what the difference between current, voltage, and power is.

[williamcll]

50 minutes ago, Enderman said:

You might want to look up what the difference between current, voltage, and power is.

V x A = W, duh? pretty much every usb cable will deliver 5 Volts, but because of different build qualities most cables will have different currents, and thus different power output.

[Enderman]

28 minutes ago, williamcll said:

V x A = W, duh? pretty much every usb cable will deliver 5 Volts, but because of different build qualities most cables will have different currents, and thus different power output.

When a wire has high resistance it causes a greater voltage drop over the cable.

The device then receives less than 5v because all voltage drops in a series circuit add up to the source voltage.

 

Anyway, the point is that an undersized cable will be converting more power into heat which is a fire hazard and you should 100% not do.

[Casey Woodruff]

So if I want to trickle-charge my phone, I should choke it at the wall, not on the cord. That about right?