I have recently written multiple articles about solving battery related issue for the Surface Pro 4. In those articles, I have been getting some comments/questions about the problems of the Surface Pro 3 as well. Unfortunately since I have never owned one, I am unsure about solving these battery issues. Nevertheless, I went ahead and did some research and was able to find some information about it.
To recall, after about a year or so of Surface Pro 3 usage, the battery started to degrade fast. Within days, the full charged battery only lasts an hour or two. That’s less than 20% of the full capacity on a full charge.
Multiple articles on the net have confirmed that this issue is not caused by any hardware problems meaning the physical battery itself is fine. This is caused by a software defect which means it is fixable. These problems can be fixed through firmware updates.