Windows 10: How to find out, why connected standby drains too much power

I have this issue on a lot of my tablets, my friends have this issue too, so I don't know, why it's so hard to address this problem and why MS doesn't do anything about it. It was already a problem with Windows 8.

It's really easy, to "mess things up", so that Windows wont properly work on a tablet and will drain too much energy in connected standby. That still shows so easily, that Windows is still a desktop OS, and not optimized for handheld devices.

I know, that there are three "hidden" tools coming with Windows:

powercfg /energy
powercfg /batteryreport
powercfg /sleepstudy

But looking on those, I don't see anything suspicious or "wrong". I know the fact, that the normal drain should be around 0.33 to 0.5% / hour on tablets, that's the margin for InstantGo/Connected Standby MS declares. But mostly all my devices drain about 1-2% per hour in connected standby.

I have nothing running on those devices, deactivated OneDrive (which isn't working too btw correctly and is still bugged under Windows 10, and if it's on, the drain is even worse).

I have disallowed the speaker/sound chip to wake up the device from standby, this a bug since Windows 8 and not fixed by MS.

One of my tablets has dual-boot and Android is running next to WIndows, and the drain under Android is normal/great compared to Windows.

I would welcome any help to find out whats causing the drain, thank you very much.

:)

 

updates

No, if the computer is powered off completely, it does not. If the computer supports Connected Standby and its deep sleep or hibernation, it will still download and install updates.

How Connected Standby Works (or Why Your Windows 8 PC's Battery ...

 

Nokia 5230 battery life

Try this:

Set the phone to GSM, disable bluetooth, disable all other applications (except of course NEP, Home and Menu) and do all the tricks for saving battery. Then start Nokia Energy Profiler to measure, switch off the display and just leave the phone for 15 minutes
in standby - let the NEP measures how much is the phone draining the battery in standby mode. After 15 minutes stop the NEP and look at the current (mA) graph. If it shows about 6-7mA current in standby mode, this is OK. Check also power graph (W) - if it
shows about 0.02W of power, that is fine. That's how you'll be sure that the phone is not overdraining the battery in standby mode.

It's not allways the battery fault. It also could be that the phone is power hungry and is draining the battery more than it should. It could be some error in circuetry or something.

The other thing is power consumption during some work (browsing, gaming, listening to music,...). It is hard to say, how much power some application needs.

 

What do you mean under "standby"?
You should look into the list of programs allowed to run under lockscreen, this is my first and main guess.
Track My Device can also drain power as well as active and full backup.
PS: I don't have a tablet, these things are based on my experience from Windows 10 Mobile.

 

I know that in Settings there is a Battery Saver option which shows Battery Use of various apps, although I'm not sure if it's still measuring in Connected Standby mode.
And I'm not sure how much it adds to the powercfg reports.
Some devices have Power Management options in Device Manager which say 'allow windows to turn off this device to save power' but I'm not sure how effective that is, and in my experience can cause problems on some hardware on waking from Hibernate/sleep.

 

OK I see I'm a bit late with this information... but just in case someone else sees this thread I did come across something which might help diagnose Connected Standby issues.
From this MSDN page: https://msdn.microsoft.com/en-us/lib...=vs.85%29.aspx

[/quote] But given the OP tried Sleepstudy and it didn't work... from this one: https://msdn.microsoft.com/en-us/lib...=vs.85%29.aspx