Is it safe to have my laptop plugged in all day using ASUS …

  • Is it safe to have my laptop plugged in all day using ASUS Battery Health Charging: Maximum Lifespan? It keeps the battery at 60% and while plugged in, it says “plugged in, not charging”

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    Keeping a lithium battery at maximum charge for an extended period of time will cause the maximum capacity to degrade very slowly.

    If you primarily use your computer plugged in and leave it plugged in, this will increase the service lifespan of the battery.

    Keeping the battery very low is the worst.

    A couple companies have modes where the impact to the battery lifespan is minimized as much as possible.

    Electric cars run on the same principles – they keep the battery in the middle of the charging range (usually 20–80%) – this is why electric car batteries work for longer than a couple of years.

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    So it isn’t only Lenovo which has this solution.

    The solution avoids trickle charging which is actually the worst impactor to battery life. By reducing this and instead charging when needed (for my Lenovo, that happens when hitting 55% and it will charge until 60% or until unplugged) the battery life is prolonged significantly for a laptop which is continuously plugged in.

    I unplug my laptop once in a few days during school and at the end of the summer during the summer holiday. And it’s not really that harmful. I see no battery-induced overheating (my NVidia GPU does most of it with its 33W TDP).

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    Yes, it is safe for plugging in all day.

    Some time (once per month) you should disable ASUS Battery Health Charging to allow battery fully charged. Then laptop is used with battery only until battery level is under 5%. This proccess is to calibration.

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    The reason the battery stops charging at this level is to maximize the battery’s lifespan. By keeping it at ~60% charge, you can keep it healthy for a longer period. Nothing is wrong with your battery or charger, it is simply a changeable system setting.

    My laptop did the same thing lately. Numerous other answers didn’t work for me until I reached a pre-installed Asus software called “MyAsus”. To change your battery health mode, follow these steps:

    1. Press your “Windows” key.
    2. Search for a program called “MyAsus” or “Asus Battery Health Charging”.
    3. Navigate to “Hardware Settings” using the rocket icon on the left.

    From here, change the setting to your liking!

    Lenovo usually has their proprietary power management software on laptops that come with Windows pre-installed. On my Lenovo Z50, I have something called Lenovo Energy Manager which is part of their Lenovo Energy Management Driver. Energy Manager has an option to toggle ‘Conservation Mode’ that prevents overcharging by restricting the battery to be charged only till 60%. This mode is meant for continuous usage while the battery wouldn’t be used. It seems like your laptop has come with this ‘Conservation Mode’ enabled and you are not able to disable it. Lenovo officially doesn’t offer Linux drivers for your model so I think you need to install Windows, install the correct energy management drivers from here and disable ‘Conservation Mode’ so that the battery can charge to 100%. You may go back to Ubuntu afterwards.

    If a battery stops charging after 60%. It means you are allowed to use the battery from SoC (State of Charge) 0% to 60%. In this case, the maximum DoD (Depth of Discharge) usable energy is 60%. Batteries usually operate at 80% DoD and sometimes more. The lesser the DoD, the more life cycles your battery will have. When the DoD is lesser, the battery degradation is slower and hence its retention capacity is higher and can perform with higher cycle life.

    Another factor is heat generation, heat while charging can also affect the cycle life the battery. The heat generation is higher while charging after 60% SoC when compared to the heat generation while charging during below 60% SoC. Since, your battery doesn’t charge after 60%, this is another way your battery lasts longer.

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