Question: how long does it take to charge kindle fire?
Answer: The charging time is from 6 to 7 hours when using 5W charger and 3 to 4 hours on using 9W charger. Usually the time to charge reduces on normal charging condition. The same is applicable to Kindle Fire HDX 7 . For Kindle Paperwhite it takes 3 to 4 hours to charge completely from drained state.