hi there. i bought a brand new Galaxy Tab S 10.5, ive been charging it overnight. on the screen i always see that it is at 100%(while the device is off). as soon as i unplug the charger and turn the device on, battery drops down to 99%. however, as soon as i reconnect the charger while the device is on, it then charges to 100% and stays on 100% for a bit after some use. just wondering if others have the same issue? or if its normal for it to not charge/stay on 100%?