I jst got this slider last night and on my HTC phone I like to have a battery widget on the main page so I can see where I'm at. I've tried 3 different widgets from the app store and they all show 100% on the widget icon, but when opened they show the actual battery status. This is the same whether the tablet s plugged in our on battery power.
I finally found one that works...sort of. The taskbar shows the correct information but the desktop does not. Also, the "water level with ice cubes" live wallpaper shows the correct batttery level. Battery Widget 1.9 by firstname.lastname@example.org is the one that sort of works.