I bought my galaxy note 10.1 a little under a year ago. I noticed randomly that I was losing battery faster and even when it was plugged into the original charger. The highest I can get it to charge to is under 70%, and that's if I leave it on the charger for days. I recently bought a new battery thinking that would solve the issue of not being able to charge while connected to the battery and not fully charging. I was wrong. I just put my new battery in and put it on the charger for a couple of hours: No change, still at the same 52%. I took the USB and directly plugged it into the computer, and it's still losing charge. I have no idea what's wrong with it and I'm not ordering ANOTHER battery. Samsung isn't much help on the issue, and I can't tell if it's just a battery/charger issue or if something else is wrong. How can I troubleshoot this?