How do know if my lenovo b590 is fully charged (100%) without turning it on?

When I plug my laptop into AC to charge the battery, is there an indicator to show that the battery is fully charged without turning it on?
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  1. In the user guide, on page 5 :

    Power and battery status indicator

    • Green: The battery charge level is between 80% and 100%, or the battery discharge level is between 20% and 100%.
    • Slow blinking green: The battery charge level is between 20% and 80%, and charging is continuing.
    When the battery charge level reaches 80%, the battery status indicator stops blinking, but the charging
    might continue until the battery is 100% charged.
    • Slow blinking orange: The battery charge level is between 5% and 20%, and the charging is continuing.
    When the battery charge level reaches 20%, the blinking color changes to green.
    • Orange: The battery discharge level is between 5% and 20%.
    • Fast blinking orange: The battery charge or discharge level is 5% or less.
    • Off: The battery is detached or the computer is powered off.
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