Libris is designed to trigger an audio alert if your battery is below 52% charge level.
The next audio prompt will occur when Libris is at 52% battery life. "Charge your personal mobile responder now. Please place your personal mobile responder in the charger now".
If you charge Libris but it still is below the 52% threshold of battery life, as soon as you pull Libris from the charger you will be presented with a low battery audio alert.
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