&gt; At my day job, we have some hardware that requires 800mA at peak to run. Even many 1A USB supplies we&#x27;ve found to offer nowhere near that current capacity. And if they do, they frequently fail after a while.<p>What you could be running into there is a charger OEM that thinks Apple way is the proper way.<p>Thing i that Apple uses a couple of resistors on the data pins to give slightly different V between them this indicates to an Apple device that they can go 1A or higher.<p>But the USB spec says to basically short the data pins.<p>Depending on the device OEM you may have the device think it is dealing with a normal computer port rather than charging port when encountering the Apple setup, and dropping back down to .5A.