I agree there should of been more testing with the units before they released. The battery problem is a huge issue.
Just fyi.. from this post: http://forums.radioreference.com/1712517-post2.html
"At first I was having the "battery issue" (GRE800), but after adjusting the voltage settings (search the forums for some starting points), I now get nearly 10 hrs of continuous run time (using 2700mah batts)."