You had previously reported that nothing was working, so hopefully this is good news. From what I have seen, when the full charge capacity at the top of the battery report increases, it is real, e.g. the battery really holds more charge than previously.
Also, when the battery capacity remaining in the recent usage section of the battery report shows greater than 100%, as in the table below, that also means the battery has recovered some of its lost charge capacity, even though the full charge capacity at
the top of the report does not show the higher capacity yet. The report’s full charge capacity eventually catches up.
Recent usage
Power states over the last 3 days
| 2016-08-13 12:20:31 |
Active |
Battery |
18 % |
5,814 mWh |
| 12:55:08 |
Active |
AC |
7 % |
2,409 mWh |
| 13:33:17 |
Connected standby |
AC |
11 % |
3,648 mWh |
| 17:19:40 |
Active |
AC |
105 % |
34,215 mWh |
| 17:22:00 |
Active |
Battery |
105 % |
34,215 mWh |
| 17:31:27 |
Connected standby |
Battery |
105 % |
34,215 mWh |
The only way to know for certain whether the battery capacity has really improved is to see if the Surface Pro 3 operates longer on battery. After several weeks of declining battery life, a few weeks ago I started to see the full charge capacity in the battery
report improve modestly after each discharge-recharge cycle. In most cases the improvement registered right away, but in some cases it showed flat at first and the battery capacity in the recent usage section showed greater than 100%. After several cycles,
the improvement in battery life was noticeable. After many more cycles, it was substantial.
I do not have hibernate shut off as you do. If your surface is not plugged in, that would have the effect of draining the battery completely, or if Windows has a programmed hard stop independent of settings, then to that point. One thing I tried had much the
same effect. I restarted my Surface on battery after it shut off automatically at low power, to try to drain the battery completely. I did this several times. On some attempts, it would not reboot, the surface just showed an empty battery icon, and I had to
plug it in. On other attempts, it did reboot, and I ran it for several more minutes until it shut down again. I cannot say why it worked sometimes and not others.
I do not know whether to recommend that others try that. Windows eventually shuts down without a full power off or hibernate, or at least that’s what it appears to do, and at least once, I lost personal settings for one of my programs (that may or may not be
related). On the other hand, draining the battery to true zero might have been the trigger event required to reset the battery driver to charge the battery to a higher total capacity. With a sample size of one, I cannot say for certain.