Warning! Check if your SP3 has a defective battery!

[brucexli]

Some folks, including myself, have become victim of defective batteries that degrades very quickly to a total death after about 1 year usage, typically right after the warranty expires. Have a look at this thread and see what's the manufacturer of your battery :

http://answers.microsoft.com/thread/783f6a00-19ba-4dcf-a828-0ad87751e15a