I followed the advice given above and charged for 14 hours.

I then pulled the battery off the charger and tested with my Hangar 9 meter and it still read "just in the green" at about 5.2 Volts.

So, I then pulled out the multi-tester and checked it too...and it showed 6.0 volts.

From these different readings, I could conclude that perhaps my Hangar 9 meter is a little off - has anyone else seen this problem before - where the Hangar 9 meter reads less than a multi-tester?

Still confused....