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Windows 7: Battery Drain while powered off ?

08 Mar 2010   #1
malcolm347

Windows 7 Home Premium
 
 
Battery Drain while powered off ?

My new HP Dm3T laptop is great, except that when I turn it off at night, the next day I notice significant battery drain, just from being off overnight.

For example, it was at 100 % charge this past friday night. Then on saturday around 1pm when I turned it on, it had about 91% charge. This was not even a 24 hour time period.

The laptop has windows 7 home premium, and i have heard about some timers that wake up the laptop to scan for viruses and what not.

Does anyone know why my battery would drain like this ?

P.S. I have been using macs for the past few years, and I am re-learning all of my PC knowledge.


My System SpecsSystem Spec
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08 Mar 2010   #2
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Yeah, that happens with any battery, even the car battery. I always disconnect the battery (or take it out) if the car or laptop are not being used for an extended period of time (e.g. more than 2 weeks). Else it will end up dead.
My System SpecsSystem Spec
08 Mar 2010   #3
pebbly

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

just to add to the advice whs gave you , i would take the lappy back to where you bought it from because 9% overnight drainage appears to me ,to be excessive
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08 Mar 2010   #4
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello malcolm347, welcome to Seven Forums!



Windows will not "wake up" a PC that has been turned off.
My System SpecsSystem Spec
08 Mar 2010   #5
richc46

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install
 
 

Quote   Quote: Originally Posted by malcolm347 View Post
My new HP Dm3T laptop is great, except that when I turn it off at night, the next day I notice significant battery drain, just from being off overnight.

For example, it was at 100 % charge this past friday night. Then on saturday around 1pm when I turned it on, it had about 91% charge. This was not even a 24 hour time period.

The laptop has windows 7 home premium, and i have heard about some timers that wake up the laptop to scan for viruses and what not.

Does anyone know why my battery would drain like this ?

P.S. I have been using macs for the past few years, and I am re-learning all of my PC knowledge.
I agree that 9% is excessive, but read this and make sure that you are using proper manintenance.
Laptop battery tips at laptop-battery.org
My System SpecsSystem Spec
08 Mar 2010   #6
malcolm347

Windows 7 Home Premium
 
 

i have not done the suggested cycles (full drain and charge several times) yet since I just received it on friday. I will do the cycles, then re post here if the problem continues. thanks !
My System SpecsSystem Spec
08 Mar 2010   #7
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Yes, please post back to keep us informed.
My System SpecsSystem Spec
08 Mar 2010   #8
richc46

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install
 
 

Quote   Quote: Originally Posted by malcolm347 View Post
i have not done the suggested cycles (full drain and charge several times) yet since I just received it on friday. I will do the cycles, then re post here if the problem continues. thanks !
That is vital, or the useful life of the battery will be diminished and you will have to buy a new one, before you are ready.
My System SpecsSystem Spec
08 Mar 2010   #9
NoN

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
 
 

Quote   Quote: Originally Posted by malcolm347 View Post
i have not done the suggested cycles (full drain and charge several times) yet since I just received it on friday. I will do the cycles, then re post here if the problem continues. thanks !
Yes it is recommended...don't forget to unplug the computer from based wall plug and not the notebook plug when you have to...it does let the time the AC Adapter to get discharge, and plug on wall before re-plug the computer.

Sometimes when resume from standby mine does says 98%, then i unplug and let battery drain a certain amount then plug it again...and everything goes to normal after for a week or so...
My System SpecsSystem Spec
08 Mar 2010   #10
pebbly

win 7 ultimate32bit, Win8.1pro wmc 32bit
 
 

my laptop an I9400 is a power hungry beast , but after 2 days of no use it will still retain 100% battery life and to be honest i dont cycle the battery so i suppose ,as in life there are good and bad ,but for a four day old laptop to drain that much overnight i would suspect a faulty battery
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 Battery Drain while powered off ?




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