Ah, sounds like the battery is done. Usually lithium batteries if they get below a certain point cannot be charged no matter what you do to it. This is why Tablet and Phone companies tell you to discharge to %50 and re-charge to %50 every few months if in storage. You'll need a new battery, and even if the battery from a miracle actually turns around, it will probably not hold a charge very well.
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'''EDIT:''' Click [http://batteryuniversity.com/learn/article/low_voltage_cut_off|Here] for more information
Ah, sounds like the battery is done. Usually lithium batteries if they get below a certain point cannot be charged no matter what you do to it. This is why Tablet and Phone companies tell you to discharge to %50 and re-charge to %50 every few months if in storage. You'll need a new battery, and even if the battery from a miracle actually turns around, it will probably not hold a charge very well.
Sorry for the issue,
Regards
Noah