I have had this phone about 2 years, no real issues with charging. All of a sudden the chargers are draining my battery really quick instead of charging, from about 50% to 0% in about 10 minutes. I use different chargers whenever I am at work, home, car as I always have. Now all that seems to charge my phone at all is my Samsung charger that came with the phone, or a USB to the computer. And will only charge at all if I have the phone in power saving mode. Any thoughts?