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How much current can USB cable handle?
Most computer USB ports supply 5V of electricity with a maximum current of 0.5A. This amount of current is standard across the majority of computers and means the overall power output will be 2.5 Watts at best. Later USB designs bring that current up to 0.9A.
How much power can a micro USB handle?
Any Micro-USB cable worth its salt—even Micro-USB–to–USB-C cables—can carry up to 15 W of charging power (although most tap out around 12 W) and transfer data at sluggish USB 2.0 speeds (up to 480 Mbps).
What means 20AWG?
AWG stands for American Wire Gauge – the thicker a conductor is the lower its gauge number will be. The amount of copper in wire roughly doubles when comparing wires 3 gauges apart. So for example 17AWG wire has about double the amount of copper per foot as 20AWG.
What’s the maximum power a USB cable can handle?
Most use 28/28 gauge, meaning 28 gauge for data and 28 gauge for power, because they are designed to handle only 500 mA. 28 gauge is tiny. Better cables use 28 gauge for data and 24 gauge for power (which is still pretty small). You can search for these using “USB 28/24” in Amazon (without the quotes of course).
Is there a theoretical limit for how much power can a micro-USB deliver to the load?
The maximum current of the micro USB connector is 1 amp. You also need to have a cable with large enough conductors to support 1 amp. , BSEE/Math, CMU 1983, I design digital, analog, and RF systems. Is there a theoretical limit for the amount of current running through a USB cable?
Is it safe to use a standard USB cable?
Not great, but okay. The same current through a 28 gauge 6-foot cable will drop the voltage 0.77v — not good. So it looks like you are probably safe to use a standard USB cable, as long as it is not too long and uses 24 gauge or larger wires.
What kind of charge cable do I Need?
I recently got a device that uses a USB cable (USB on one end and a power connector on the other end) as a charge cable. The device draws 16.5V, 3.65A Max. I want to extend the charge cable by using a USB extension cable.