hi, i got my replacement surface yesterday after my first one died. i did the powercfg battery report and got some nonsense stats back. is there any way to reset the stats or are they hard wired? cheers, si
Good question. I've looked at battery report many times--never occurred to me to "reset" the stats. What kind of "nonsense" are you referring to? Seems like it should tell you something about the replacement's history or status.
It's possible there are registry entries containing data powercfg consults and you might be able to change the reported stats. I haven't tried to look for such data, so I don't know what there is to find.
Some nonsense below. My original surface never had junk in the report...
COMPUTER NAME SURFACEPRO2
SYSTEM PRODUCT NAME Microsoft Corporation Surface Pro 2
BIOS 2.04.0950 05/12/2014
OS BUILD 9600.17085.amd64fre.winblue_gdr.140330-1035
PLATFORM ROLE Slate
CONNECTED STANDBY Not supported
REPORT TIME 2014-07-15 09:32:09
Information about each currently installed battery
DESIGN CAPACITY42,002 mWh
FULL CHARGE CAPACITY40,078 mWh
Power states over the last 3 days
START TIME STATE SOURCE CAPACITY REMAINING
19:22:18 Active AC 100 % 40,078 mWh
19:32:04 Active Battery 100 % 40,078 mWh
20:37:09 Suspended 75 % 30,014 mWh
22:36:21 Active Battery 74 % 29,681 mWh
23:39:43 Suspended 45 % 18,086 mWh
2014-07-15 08:38:28 Active Battery 44 % 17,730 mWh
08:38:28 Suspended 44 % 17,730 mWh
08:39:03 Active Battery 44 % 17,656 mWh
09:32:00 Report generated Battery 18 % 7,407 mWh
Battery drains over the last 3 days
START TIME STATE DURATION ENERGY DRAINED
2014-07-14 16:14:58 Active 0:08:122 % 777 mWh
16:23:50 Active 0:05:03-103 mWh
18:01:35 Active 0:00:00--
19:32:04 Active 1:05:0425 % 10,064 mWh
22:36:21 Active 1:03:2129 % 11,595 mWh
2014-07-15 08:38:28 Active 0:00:00--
08:39:03 Active 0:52:5626 % 10,249 mWh
History of system usage on AC and battery
BATTERY DURATION AC DURATION
PERIOD ACTIVE CONNECTED STANDBY ACTIVE CONNECTED STANDBY
Battery capacity history
Charge capacity history of the system's batteries
PERIOD FULL CHARGE CAPACITY DESIGN CAPACITY
2014-07-14187,598 mWh 101,048 mWh
Battery life estimates
Battery life estimates based on observed drains
AT FULL CHARGE AT DESIGN CAPACITY
PERIOD ACTIVECONNECTED STANDBYACTIVECONNECTED STANDBY
Current estimate of battery life based on all observed drains since OS install
Since OS install 3:54:02-4:05:16-
Hi. I have the same question.
My battery report using powercfg on the Surface Pro 3 is missing Usage history, Battery capacity history, and Battery life estimates. There is no stats under these three settings.
It did contain stats prior to a PC Refresh, needed because of a change inadvertently made to the registry that locked me out of accessing any files.
Anyhow, I just want to get these three sections to display the stats. So how do I reset the battery report stats? An OS Restore?
Yep, that was me. Firmware update seemed to solve the problem, I assume it reset the counters. Just don't hold your breath waiting for the next Firmware update.Seems like my exact problem and solution are reported on the forum here: http://www.surfaceforums.net/threads/powercfg-battery-report-missing-usage-history-etc.11946/