Dead battery?

I bought this PowerBook G4 refurbished off of Ebay (not a great place but it came cheap and it's in good shape). It came with a 65 watt adapter and a newer battery. But the battery doesn't seem to work. I do have a working battery for this computer so I know the computer and the adapter are working correctly as this other battery charges just fine. I've tried finding an answer for why this newer battery won't charge online but nobody has the same symptoms as me. Here's what happens when the newer battery is in the computer:
Power adapter goes orange indicating charging.

OS X states the battery is not charging.
System Profiler shows this:

Charge Information:

  Charge remaining (mAh):    0

  Charging:    No

  Full charge capacity (mAh):    4273

  Health Information:

  Cycle count:    49

  Condition:    Good

  Battery Installed:    Yes

  Amperage (mA):    0

  Voltage (mV):    6083

 

Compare that to the good battery:

Charge Information:

  Charge remaining (mAh):    2906

  Charging:    No

  Full charge capacity (mAh):    3013

  Health Information:

  Cycle count:    515

  Condition:    Good

  Battery Installed:    Yes

  Amperage (mA):    0

  Voltage (mV):    12405

 

The biggest difference I see is that the voltage for the good battery is about twice the voltage of the bad battery.

Any ideas on if and how to revive this? I'd like it as a backup battery at least, or even the main one if it lasts longer.

 

I added the information for the good battery.

View the original article here