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  • Excess heat during laptop recharging?

    Home Forums AskWoody blog Excess heat during laptop recharging?

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      • #2337299
        Fred Langa
        AskWoody MVP

        LANGALIST Excess heat during laptop recharging? By Fred Langa A reader is concerned: His laptop’s CPU temperature rises during battery-charging sessio
        [See the full post at: Excess heat during laptop recharging?]

        1 user thanked author for this post.
      • #2337473
        AskWoody Plus

        Another possible cause of the temp rise when plugged in is that some laptops have different performance settings for On Battery or Plugged In.  When on battery, the CPU may be throttled, the screen dimmed, and the hard drives and screen may turn off after shorter times without use.  Once plugged in, the CPU may run faster and hotter.  Look under Control Panel > Power Options > Change Plan Settings > Advanced Power Settings > Processor Power Management > Max Processor State.


        -- Peter R --

      • #2337710

        I’m sorry but I’m not a paying member so I can’t read the full article.

        One of the byproducts of charging a battery is heat. So anytime you are charging the laptop battery there is additional heat that has to be dissipated from the inside of the laptop.  Assuming your laptop has a fan, dirt accumulates inside the laptop and makes the cooling fan/CPU heat sink less efficient over time.  Add to that the heat from the battery charging and you can have elevated temperatures.  CPUs have had thermal protectors in them for years. When you exceed the max operating temperature for the CPU it will shut down and crash the operating system. That is not to say you should keep letting it “over heat”.  Make sure you know what “over heating “ is.

        • #2337739
          Susan Bradley

          You do realize you can become one by picking what you want to pay?

          Susan Bradley Patch Lady

        • #2338069

          Really most laptops will just throttle the CPU clocks back if the CPU reaches the thermal limits so you will just lose performance until the CPU cools down sufficiently! But right before my HP Probook’s battery died I noticed that the battery was getting hot and staying hot but that battery was well past its lifetime anyways.

      • #2338026
        AskWoody Lounger

        I have a hard time trusting any freeware that makes grand promises such as “prevent PC overheating”. How could it possibly achieve that?

        The only things you can do are: make sure nothing is hogging resources in the background, proper cooling/ventilation, and not charging your battery to 100% and keeping it at 100% all the time (apart from generating excess heat, this will destroy batteries faster).



        • #2338050
          Paul T
          AskWoody MVP

          There are no grand promises, just a user created shutdown when the temperature is close to a point the user decided is too high.
          The app itself does nothing to lower the temperature.

          cheers, Paul

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