Surface Book 2 battery drain whilst off

I do test my surface book 2 shuting down for 7 hours and mine has not battery drain after use of shift key to turning off.  

Check if yours has a problem with the firmware and you have the lastest  firmware update released on may 15. 

Check your system files integrity executing the sfc /scannow on powershell.

On the end of the report has information about your battery healt. If your battery has less 90% of healt maybe the drain is because the battery can't retain the 100% of charge. Try shuting down your sb2 whit the 50% of charge and share your results.

My SB is "new", most of the time it's on the charger for work reasons (being at home all the time), so it has only had 2 charge cycles so far. 

On the end of the report has information about your battery healt. If your battery has less 90% of healt maybe the drain is because the battery can't retain the 100% of charge. Try shuting down your sb2 whit the 50% of charge and share your results.

You can do a battery report . Using powershell type powercfg /sleepstudy -duration 1

Open the report on your web browser and check if you have listed shutdown instead shutdown (Hybrid)

The procedure i was doing is: 

• Press and hold shift key
• Select shutdown
• Release the shift key

Sorry if my english are not good.

These are my results. 

Your English is fine :) Thank you for input on this battery drain though. Sadly, it did not work for me.

You can do a battery report . Using powershell type powercfg /sleepstudy -duration 1

Open the report on your web browser and check if you have listed shutdown instead shutdown (Hybrid)

The procedure i was doing is: 

• Press and hold shift key
• Select shutdown
• Release the shift key

Sorry if my english are not good.