This happened yesterday for the first time. I had only 10% battery left and I plugged it in the wall charger. In about 1 hour it went from 10 to 13%. I took a look in a battery app and the app showed me that the phone was the entire hour in "Charging USB" mode when it was plugged in the wall charger.
At about 11 pm yesterday, I plugged the phone back to the wall charger and this morning at 6 am I took a look in the battery app. It took the phone about 5 hours to charge from 6 to 100% (also, it stayed in "Charging USB" mode all the time).
Did a little research and found some forums that said to try with another charger. I have another charger from my old Huawei G300 and tried with that. Here are the results:
1. Huawei charger with LG cord - Charging AC
2. LG charger with Huawei cord - Charging AC
3. Huawei charger with Huawei cord - Charging AC.
Looks like only when I use LG charger and LG cord I have this problem. The rest of the cases the phone says "Charging AC" and charges fast as usual.
I have the stock 4.4.2 factory image since it came out and the phone is rooted (if any of this is important even if I don't think it should. The phone worked like normal until yesterday.)
Anyone has any clues or pieces of advice?
Thanks for your time!