Battery status 100% fully charged

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  1. RonTG
    Posts : 13
    windows 10
       New #1

    Battery status 100% fully charged


    Hello,
    I am using a new lenovo laptop with windows 10 pro on it (not OEM).
    I have calibrated my battery because it's status was "100% plugged in, charging".
    Now after calibration, when it reaches 100% the status is "100% Fully charged", but I think the battery is being charged non stop because it doesnt go under 100%.
    I believe this is not healthy for the battery so Im looking for a way to get the "100% plugged in, not charging" status. can I configure it through windows?
    Thanks
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  3. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #2

    Every laptop and cell phone out there are designed to charge the battery to 100% and keep it there when plugged in. Modern Lithium Ion batteries do not have "memories" like the old Ni-Cads and others did. Once the battery is charged to 100%, the carging circuitry will trickle charge it to keep it at 100%. If you don't want your battery to stay at 100%, then you will have to unplug the laptop from power.
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  4. labeeman
    Posts : 28,808
    Mint 21.3
       New #3

    NavyLCDR said:
    Every laptop and cell phone out there are designed to charge the battery to 100% and keep it there when plugged in. Modern Lithium Ion batteries do not have "memories" like the old Ni-Cads and others did. Once the battery is charged to 100%, the carging circuitry will trickle charge it to keep it at 100%. If you don't want your battery to stay at 100%, then you will have to unplug the laptop from power.
    Nope not every laptop is designed that way Lenovo LT are not they will when plugged in will only charge when the battery is below a set percentage and then charge it to 100% then quit charging.

    Battery status 100% fully charged-capture.png
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  6. RonTG
    Posts : 13
    windows 10
    Thread Starter
       New #4

    NavyLCDR said:
    Every laptop and cell phone out there are designed to charge the battery to 100% and keep it there when plugged in. Modern Lithium Ion batteries do not have "memories" like the old Ni-Cads and others did. Once the battery is charged to 100%, the carging circuitry will trickle charge it to keep it at 100%. If you don't want your battery to stay at 100%, then you will have to unplug the laptop from power.
    this method to keep it at 100% will not reduce battery life?
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  7. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #5

    RonTG said:
    this method to keep it at 100% will not reduce battery life?
    Temperature is the killer to the battery, not the trickle charge:
    How to Prolong Lithium-based Batteries - Battery University
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  8. labeeman
    Posts : 28,808
    Mint 21.3
       New #6

    You need to read further as keeping the battery 100% with a trickle charge will reduce the life of a battery.


    Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life. For example, a lithium-ion cell charged to 4.20V/cell typically delivers 300–500 cycles. If charged to only 4.10V/cell, the life can be prolonged to 600–1,000 cycles; 4.0V/cell should deliver 1,200–2,000 and 3.90V/cell should provide 2,400–4,000 cycles.

    On the negative side, a lower peak charge voltage reduces the capacity the battery stores. As a simple guideline, every 70mV reduction in charge voltage lowers the overall capacity by 10 percent. Applying the peak charge voltage on a subsequent charge will restore the full capacity.
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  9. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #7

    OK, @labeeman, how about you advise the OP what to do instead of just contradicting my opinion?
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  10. labeeman
    Posts : 28,808
    Mint 21.3
       New #8

    NavyLCDR said:
    OK, @labeeman, how about you advise the OP what to do instead of just contradicting my opinion?
    The setting he is looking for is not in Windows it should be in his Bios as I do not have his model LT (whatever that is) I cannot advise him. I also have experience with short battery life when they are on a constant trickle charge.
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  12. NavyLCDR
    Posts : 18,432
    Windows 11 Pro
       New #9

    labeeman said:
    The setting he is looking for is not in Windows it should be in his Bios as I do not have his model LT I cannot advise him. I also have experience with short battery life when they are on a constant trickle charge.
    K. Thanks!
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  13. RonTG
    Posts : 13
    windows 10
    Thread Starter
       New #10

    labeeman said:
    The setting he is looking for is not in Windows it should be in his Bios as I do not have his model LT (whatever that is) I cannot advise him. I also have experience with short battery life when they are on a constant trickle charge.
    the model is ideapad 510s-14ikb type 80uv
    I pulled off the charger and let the battery reduce to 98%, plugged it again and since then the status is "98% available (plugged in, not charging) - is it still on trickle charging (I believe so because it doesnt go down from 98%)
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