Surface 2 - Poor battery life

[kristalsoldier]

Something isn't right, are you using Adaptive Brightness or have you turned it off and set your brightness at 30%? I've used the Surface 2 since October and I get 8-14 hours of battery, if I'm using Miracast and streaming video I might only get 7 hours. I would do a full reset...

Are you recommending turning off Adaptive Brightness?

 

[jnjroach]

Are you recommending turning off Adaptive Brightness?

Nope....I leave it pretty much stock

 

[kristalsoldier]

Nope....I leave it pretty much stock

OK. Thanks. If you don't mind my asking, at what brightness level?

 

[jnjroach]

OK. Thanks. If you don't mind my asking, at what brightness level?

About 90% but with Adaptive Brightness on...

 

[Tewy]

Thanks for the replies - I didn't know what adaptive brightness was until I just researched it.
I went in to control panel and indeed it was turned off for both battery and plugged in - I have now turned this on for both based on above comments, was this the correct thing to do?

I also have the 'adjust brightness automatically' turned off in PC Devices with screen brightness set around 30%, I would assume this is not an issue?

Thanks again for the interest.

 

[jnjroach]

You be fine...

 

[Tewy]

It seems that after a restart and having turned on adaptive brightness the adjust brightness automatically turns on.
I guess as you would imagine these are linked or effectively the same think from different locations.
Either way I will see if this makes any difference to my battery life, I have left Bluetooth on also.
If this doesn't yield any improvements I will try a full reset but I have to say I am not hopeful either way, it still seems to be draining at 20% per hour.

 

[jnjroach]

Have you ran from an elevated CMD Prompt a "Sleep Study"? C:>powercfg /sleepstudy and C:>powercfg /energy

Both commands will creates a HTML Reports that lists what is impacting your battery and/or preventing Connected Standby

 

[fieldbaker]

Please do powercfg /energy and show here. Myself is having problem with Nvidia Tegra Audio running in the background and causing battery drain. Microsoft is gonna exchange it

 

[Tewy]

I tried to do power /cfg in admin command prompt - don't know if I did it correctly.
It ran some kind of tracing for 60 seconds and then stated there was some kind of power efficiency problem.
Not sure how to produce a report, can somebody give me some guidance on this - thanks.

 

[Tewy]

Sounding dumb I know but where do I find the produced report - I assume it may be within one of the windows system files?

 

[Tewy]

Think I have managed to produce the report, hopefully it shows.
Any thoughts would be appreciated.