If your kindle fire not charging, please follow these tips :
- Try use different usb cable and charger before doing anything.
- If not work, please try to use PC USB or car charger.
- I tried several chargers and I was successful with my power beats USB and my Samsung fast charge adapter.
try to also keep the battery above 8 % below 5% can cause battery drain and cause charging problem and even your battery to go bad.