I'm using a Lenovo Laptop, Windows 10.

Recently I think the battery cell is not fully functioning, and system occasionally triggers the Event 524, Critical Battery Trigger Met and subsequently, the Event 42,The system is entering sleep., even though the laptop is connected to the power source AND the battery is more than 95% charged.

Obviously, the system is misreporting the battery condition, and hence resulted in the above trigger, and then subsequently, the sleep event. This is very annoying because it disrupts the rhythm of my work.

How to stop the system from entering the sleep mode if the Event 524, Critical Battery Trigger Met is (mis)reported, and despite (potential) battery fault?

Some asked: how do you know that this is a misreporting, and not because the battery is really dying? My answer:

  1. It's simple. Right before the machine goes to sleep, the battery is still more than 95% charged.
  2. Does that really matter if the battery is dying? I am connecting the laptop to a power supply. So even if the battery dies the laptop should still have power supply, right?
  • What makes you think it's being misreported rather than accurately telling you your battery has reached the end of its useful life? – Tetsujin Jul 19 '18 at 6:27
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    @Tetsujin, I know that it's a misreporting because the battery right before the sleep is more than 95% charged – Graviton Jul 19 '18 at 6:31
  • That isn't conclusive proof, it's not even good anecdotal evidence. Read howtogeek.com/217010/… & tell us the result. – Tetsujin Jul 19 '18 at 6:41
  • @Tetsujin, even if the battery is dying, my computer shouldn't go to sleep because it is plugged into the power cable. – Graviton Jul 19 '18 at 6:54
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    Graviton - What is the make and model of the machine in question? Have you checked for a BIOS firmware update yet? If you take out battery and keep it out and then reboot it while the battery is not in it, does the issue occur still? Please note that just because a batter reads 95% charged does not mean it will not drain down quickly if the battery is old. Batteries are typically only guaranteed from manufacturer no more than 3 years so if it's older than 3 years, measure accordingly with a voltmeter, etc. or replace with a good known and see if it continues. – Pimp Juice IT Jul 22 '18 at 21:04

Maybe this can help. Press Windows key and type: Edit power plan In this menu go to: Change advanced power settings In the next menu, all the way at the bottom there is Battery. In here you can define the Critical Battery Action for plugged in, for you this could be: do nothing.

Hope this helps.


  • Why is this down president? Seems to me useful enough – Graviton Aug 12 '18 at 4:04

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