Same problem as OP but started seeing symptoms about 1 year ago (August/September 2015), dismissed them as a minor bug with Windows 10 that would be fixed quickly.
Since then here is what has happened.
February 2016: Reported battery issue to MS after reinstalling Windows 10 since original symptoms were still present. Issue was that battery always showed as 99% charged, regardless if plugged in or on battery power. It would still recognize
that it was plugged in (would show 99%, Charging) or not plugged in (would show 99%, not charging). Despite what was being displayed, the battery seemed to charge, although battery life seemed to have diminished, maybe 2-3 hours at best. MS was unable to
diagnose the problem and recommended a factory reset. I was unable to do this at the time since I needed the surface for work purposes.
July 2016: Woke up one morning and the battery no longer held a charge. Would work normal when plugged in but would immediately shut down when the power cable was removed. There was an update that was installed overnight so the first thing
I did was try and restore the surface to the pre-update state. Didn't work. I then backed up everything and performed the factory reset. Again nothing. I took the computer to a Microsoft store hoping to get better results in person, was told that it was a
hardware problem and I would have to buy a new S3 for $650. When I asked what the problem was, nobody was able to give me an actual answer but kept pushing the replacement.
Here is the battery report from today. looks pretty well the same as the one the Microsoft store ran back in August.
Battery report
| COMPUTER NAME |
DESKTOP-9T6V95A |
| SYSTEM PRODUCT NAME |
Microsoft Corporation Surface Pro 3 |
| BIOS |
3.11.1550 06/30/2016 |
| OS BUILD |
14393.187.amd64fre.rs1_release_inmarket.160906-1818 |
| PLATFORM ROLE |
Slate |
| CONNECTED STANDBY |
Supported |
| REPORT TIME |
2016-09-26 18:13:51 |
Installed batteries
Information about each currently installed battery
| NAME |
X883815 |
| MANUFACTURER |
LGC-LGC |
| SERIAL NUMBER |
1153964292 |
| CHEMISTRY |
LION |
| DESIGN CAPACITY |
42,157 mWh |
| FULL CHARGE CAPACITY |
41,344 mWh |
| CYCLE COUNT |
253 |
Recent usage
Power states over the last 3 days
| 2016-09-23 18:28:33 |
Connected standby |
AC |
99 % |
41,124 mWh |
| 2016-09-24 12:58:59 |
Active |
AC |
99 % |
41,124 mWh |
| 13:03:04 |
Connected standby |
AC |
99 % |
41,124 mWh |
| 16:58:03 |
Active |
AC |
99 % |
41,124 mWh |
| 19:59:56 |
Connected standby |
AC |
99 % |
41,124 mWh |
| 2016-09-25 11:04:23 |
Active |
AC |
99 % |
41,124 mWh |
| 20:14:00 |
Suspended |
|
99 % |
41,124 mWh |
| 20:18:13 |
Active |
AC |
99 % |
41,124 mWh |
| 2016-09-26 18:09:57 |
Report generated |
AC |
99 % |
41,124 mWh |
Battery usage
Battery drains over the last 3 days
Usage history
History of system usage on AC and battery
| 2016-09-11 - 2016-09-18 |
- |
- |
|
5:36:18 |
162:14:01 |
| 2016-09-19 |
- |
- |
|
- |
23:59:56 |
| 2016-09-20 |
- |
- |
|
- |
23:59:56 |
| 2016-09-21 |
- |
- |
|
- |
23:59:57 |
| 2016-09-22 |
- |
- |
|
1:01:21 |
16:34:01 |
| 2016-09-23 |
- |
- |
|
0:20:42 |
23:38:14 |
| 2016-09-24 |
- |
- |
|
3:05:55 |
20:53:55 |
| 2016-09-25 |
- |
- |
|
12:51:13 |
11:04:19 |
Battery capacity history
Charge capacity history of the system's batteries
| 2016-09-11 - 2016-09-18 |
41,344 mWh |
42,157 mWh |
| 2016-09-19 |
41,344 mWh |
42,157 mWh |
| 2016-09-20 |
41,344 mWh |
42,157 mWh |
| 2016-09-21 |
41,344 mWh |
42,157 mWh |
| 2016-09-22 |
41,344 mWh |
42,157 mWh |
| 2016-09-23 |
41,344 mWh |
42,157 mWh |
| 2016-09-24 |
41,344 mWh |
42,157 mWh |
| 2016-09-25 |
41,344 mWh |
42,157 mWh |
Battery life estimates
Battery life estimates based on observed drains
| 2016-09-11 - 2016-09-18 |
- |
- |
|
- |
- |
| 2016-09-19 |
- |
- |
|
- |
- |
| 2016-09-20 |
- |
- |
|
- |
- |
| 2016-09-21 |
- |
- |
|
- |
- |
| 2016-09-22 |
- |
- |
|
- |
- |
| 2016-09-23 |
- |
- |
|
- |
- |
| 2016-09-24 |
- |
- |
|
- |
- |
| 2016-09-25 |
- |
- |
|
- |
- |
Current estimate of battery life based on all observed drains since OS install