I don't have a
MA, but I interpret the battery guide as stating that:
• The LED's will not light once in hibernate mode so if no LED's light it is either a dead battery or in hibernation. If it is a good battery you can bring it out of hibernation by charging.
• The battery will go into hibernate mode "if depleted and stored for a long period". I don't know what level "depleted" is or how much time constitutes a "long period".
• I don't know about any postal workaround. I can only hope that the battery designers set this hibernate function because it is best for the batteries, similar to the automatic discharge function.