When you put this battery, installed in the pod on the charger, does it turn red? If it does you could try the following.
Put just the battery in the charger, and rotate it slowly until the LED turns red. If it does, leave it for a few minutes, put it back in the pod, and put on the charger until green.
If it won't turn red under any circumstances, the battery could have an internal short and need to be replaced. You could send a note to firstname.lastname@example.org about it.