battery replacement for N8000

[haree]

hi
sorry if this has been asked and answered i could not find it
i have a N8000 for around 3 yrs and now its taking too long to charge like 12hrs and still 80%
can we get these batters replaced if so how much would it cost and in India chennai the sam service is next to my house just wanted to confirm it is possible before visiting then thanks in advance :good::laugh:

 

[JJEgan]

https://www.google.co.uk/search?q=b...&oe=utf-8&gws_rd=cr&ei=jEAuVpfFGYi3-AHjmIeYBQ