The same can be true if you are connecting the USB cable directly to a computer or other USB charging port those ports can deliver anything from 0.5 amps and up.

Most Kindle Fires expect 5 volts at 1.8 amps if the charging adapter provides less than this, your Fire may charge slowly or not at all. It’s important to note that not all chargers are created equal they have different amperages and sometimes even different voltages. If it will, then the problem was the charger. Instead of using the charger, use the cable to connect to a computer or other USB power source and see if your Fire will charge from that. If the charging adapter (the little square that plugs into the wall) isn’t working, it’s super easy to figure out the problem. Seems rather obvious, but sometimes it’s the obvious things that get us. Make sure you have power in the outlet you’re trying to charge from. (Is your Fire charging OK, but for some reason won’t power up? Check out this guide to what to do if your Fire won’t turn on.) Finally, I’ll provide a few guides to full-fledged repair of charger-related components on your Fire.

I’ll also go over some MacGyver-style fixes that can resolve some charger port problems. Fortunately, there are several troubleshooting approaches you can take to figuring out the source of your charging problems, and in this brief tutorial I’m going to show you how to solve this I will also discuss some precautions to take to avoid developing “charger port rot”, the underlying cause of many of these charging problems. Tablets that won’t charge are truly aggravating the Fire, like all tablets, depends on battery power to run and if the battery won’t charge then you won’t be getting a lot of use out of your device. Specifically, the Fires have a tendency for their chargers to go bad in one way or another, so that the devices (while perfectly functional in all software and most physical aspects) have a hard time taking a charge. Unfortunately, many models of the Kindle Fire have a known consistent and persistent design problem that Amazon seems to have had difficulty in shaking.

Battery charger needle not moving