I have a Galaxy Tab3 10.1 which is not charging. I switch it off at night and plug it in to charge. The battery percentage before switching it off may be 40%, after "charging" the whole night it may be 50%. The indicator shows its charging, but it doesn't. I tried another cable which I use to charge my S4 (no problems), but it makes no difference. This started out as an occasional problem, but its getting worse. Can anyone help?