Is it normal to have such a huge drop in charging current with longer cable lengths?

[fuzzybabybunny]

I bought a 3ft and 6ft Amazon Basics Micro USB cable, both highly reviewed.

My phone shows the 3ft cable charging at 1480 mA but the 6ft cable drops it down to only 620 mA, to the point where sometimes the battery life continues to decrease during use even while it is plugged in. Does this sound normal? Should only shorter cables be used for actual normal charging?

 

[Howard]

What AWG is the cable?

 

[lxskllr]

Isn't there something with cables that don't have data pins charging at half the full rate? There's some peculiarity like that, but I can't remember what it is.

 

[Puppies04]

Isn't there something with cables that don't have data pins charging at half the full rate? There's some peculiarity like that, but I can't remember what it is.

I have bought several micro USB chargers when I have been working away from home and forgot to pack my proper one. Several have charged my phone but only very very slowly. They are usually marked as "blackberry" chargers so I try to steer clear of them now.

I just assumed that different manufacturers use different pins/amount of pins to charge their phones and some don't work very well with certain brands.

 

[videogames101]

You're going from like 150 mOhms to 300 mOhms if it's 28 AWG so you're going to double the voltage drop across the wire from .21V to .42V, but I don't see why you'd lose half of you're charging current because of that... unless there is software control which limits charging current based on input voltage or something, very strange behavior indeed

usually a drop like that comes from using a standard usb port rather than a charging usb port, but you're using the same port i assume, so... who knows?

 

[disappoint]

You're going from like 150 mOhms to 300 mOhms if it's 28 AWG so you're going to double the voltage drop across the wire from .21V to .42V, but I don't see why you'd lose half of you're charging current because of that... unless there is software control which limits charging current based on input voltage or something, very strange behavior indeed

usually a drop like that comes from using a standard usb port rather than a charging usb port, but you're using the same port i assume, so... who knows?

V='RI

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