Does this hurt the battery if I always plug in lenovo yoga 530-14arr AC adapter?

Keeping your battery plugged in for extended periods of time will not cause it to be over-charged. If your battery remains at or near 100% most of the time, Lenovo recommends setting the Battery Charge Threshold to limit the battery charge. This will minimize unnecessary degradation and the potential for swelling. For users who are always connected to AC, Lenovo recommends setting the upper charge limit to 80% or less. This limit can be set by using the Battery settings in Lenovo Vantage.

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