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    Power Bridge and battery cycle life

    Discussion in 'Lenovo' started by vinuneuro, Dec 5, 2013.

  1. vinuneuro

    vinuneuro Notebook Virtuoso

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    Discharging lithium based batteries completely is terrible for their life. What's going to happen to the external battery that keeps getting discharged completely before switching to the internal battery. This reminds me of the issues with the bay batteries in older models.
     
    vinuneuro, Dec 5, 2013
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  2. shrine

    shrine Notebook Enthusiast

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    Most batteries now are set up with an earlier 'dead' threshold - I think smartphones die at 4-5%. What damages them is forcing them to start again once dead.

    I could see Lenovo underestimating an issue like this, though.
     
    shrine, Dec 5, 2013
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  3. ibmthink

    ibmthink Notebookcheck Deity

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    On the T440s, the batteries are discharged like this:
    - First: External Battery, discharging until 5 %
    - Second: Internal Battery
     
    ibmthink, Dec 5, 2013
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  4. vinuneuro

    vinuneuro Notebook Virtuoso

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    Good to know.
     
    vinuneuro, Dec 5, 2013
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