Also, another thing that is confusing is that the back of the GG says to use the 2103 adapter and it needs 9V. But the 2103 is 10 V but the male end fits perfectly.
EDIT: Well now I am starting to think my power adapter is bad. Strangely, I have 2 2103 AC adapters but they have different male ends. The other 2103 doesnt push in all the way and I get 0 VDC. The other gives a snug fit but again onoy 6.8 VDC. So I may have to track down a good 2103 to rule that out. still doesnt explain the battery issue. My battery contacts and springs appear to be fine.