Why is my Samsung Galaxy Note 10.1" charging very slow.
There are a several reasons why the Galaxy Note 10.1 is not charging as much.
1. Too many application are turned on (check the task manager)
2. Too many notifications icon are turned on ( bluetooth, gps, wifi, etc.)
3. Plugging your charger using a computer
Are you using the original charger and plugging it into a wall charger?
How long did you use the Note 10.1 previous to noticing the damage? and was it extremely hot at the back?
If so, then maybe the battery isn't picking up from the charger. I've watched back to back movies while still using the charger but this can prove very devastating on the charger's outlet which became extremely hot after 4-5 hours or so of charging continuously. It turns out, the galaxy note 10.1 can withstand 8+ hours of ongoing movies but the charger outlet cannot. *If I didn't unplug it after 4-5 hours, the plug what have fried.
In this case, i believe the charger is more likely damaged than the Galaxy Note 10.1, which is more of a better scenario. Especially, since you charged it for over 24 hours, meaning it's charging something, but very slowly. Operating Galaxy Note while charging can prove detrimental in the charger's outlet and can in fact burn out.
I hope this info is helful,
Jason Chan