Here are some tips…
If you have an iPad Mini (perhaps model number A1454 or A1455) that refuses to charge, there could be a couple of reasons as to why, so you have some options. If you haven’t tried any of these ideas below, give them a whirl before assuming that your device is ready to be sold or thrown out (don’t ever throw it out, though, because you can always sell it/solder it with a third party repair shop).
1.) Reboot it. This will let you know if there is a software problem. You have to hold down the suspend button which is located at the top of the device, power off, then turn it back on. This might be all you need to do, but if it doesn’t work, move on to step 2.
2.) If you’ve tried charging the Mini with an electrical outlet upon rebooting it but it still will not charge, it’s time to try plugging it into a computer. If the device reads, “Not Connected” then this is a surefire sign that the cable is working, so you can rule this out as a problem. All you have to do in this instance is purchase a new adapter.
3.) If none of these work, then try contacting Apple because your problem could actually be a more complex hardware issue.
4.) Solder the device at a local repair shop!
It is incredibly annoying to have an iPad that won’t charge, so if you are in this boat, try all of the steps listed to see if any are effective. If not, your carrier or Apple is sure to offer a solution, although it might cost you. A third party local repair shop can do the trick, too, and most likely for the lowest price tag.