Battery Discharge

becool773

Adept
If a laptop is not used for a week then how much of a batter discharge is normal? Does it help to disconnect the battery from the mobo if one is not going to use it for many weeks?
Is there a way to reset (not the right word) a battery? By that I mean I read that one should keep it plugged in even after its fully charged and then let it discharge to zero. Does this help a battery?
 

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becool773 said:
Is there a way to reset (not the right word) a battery? By that I mean I read that one should keep it plugged in even after its fully charged and then let it discharge to zero. Does this help a battery?
Click to expand...
This does not help the battery, this only calibrates the battery percentage to be accurate, so it shows true state of charge.

becool773 said:
Does it help to disconnect the battery from the mobo if one is not going to use it for many weeks?
Click to expand...
Not really, just charge it up to 60% and leave. Disconnecting the battery wouldn't make a huge difference, but if it does then there could be a another problem.
 
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Depends on laptop, battery health, age etc.
I have 3 laptops... and for one of them, the battery depletes 100& if not used for 8-10 days. Other ones stay good for a month.
 
becool773 said:
If a laptop is not used for a week then how much of a batter discharge is normal? Does it help to disconnect the battery from the mobo if one is not going to use it for many weeks?
Click to expand...

Which laptop, what OS? It varies. There was a bug with some laptops and some versions of Windows 10 & 11 that drained the battery completely either overnight or over the course of a week. A few tech channels covered it:


becool773 said:
Is there a way to reset (not the right word) a battery? By that I mean I read that one should keep it plugged in even after its fully charged and then let it discharge to zero. Does this help a battery?
Click to expand...

This is called battery calibration and ideally it should be done once a month. Using the laptop until the battery is drained and let it shutdown and stay unplugged for a few hours or overnight before charging it up again.

This calibration helps the OS accurately calculate remaining time over the course of the life of the battery, which is why it should be done regularly.

Battery Calibration - iFixit Support

All newly-installed smart batteries should be calibrated as soon as possible. This helps your system get an accurate reading on the battery’s state of charge. W
help.ifixit.com help.ifixit.com
 
rsaeon said:
Which laptop, what OS? It varies. There was a bug with some laptops and some versions of Windows 10 & 11 that drained the battery completely either overnight or over the course of a week. A few tech channels covered it:




This is called battery calibration and ideally it should be done once a month. Using the laptop until the battery is drained and let it shutdown and stay unplugged for a few hours or overnight before charging it up again.

This calibration helps the OS accurately calculate remaining time over the course of the life of the battery, which is why it should be done regularly.

Battery Calibration - iFixit Support

All newly-installed smart batteries should be calibrated as soon as possible. This helps your system get an accurate reading on the battery’s state of charge. W
help.ifixit.com help.ifixit.com
Click to expand...
I think he is talking about fully powered down laptop.

becool773 said:
If a laptop is not used for a week then how much of a batter discharge is normal? Does it help to disconnect the battery from the mobo if one is not going to use it for many weeks?
Is there a way to reset (not the right word) a battery? By that I mean I read that one should keep it plugged in even after its fully charged and then let it discharge to zero. Does this help a battery?
Click to expand...
Depends on battery size. Even if you turn off every feature related to instant wake, quick boot etc, you may see 4-5% drain per day.