Is it okay if my laptop is always plugged in so that my battery is charged 100%? Must I allow it to drain periodically by unplugging to increase battery life? - Quora
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Acer laptop battery says 100 but dies when unplugged. Solved: Laptop turns off when unplug, battery 100%
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power management - Battery on Macbook Air shows fully charged but computer dies when unplugged - Ask Ubuntu
My Dell inspiron 15 3567 suddenly shut down when unplugged AC adapter but battery appears fully 100%... - Dell Community
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