Battery Widget is a beautiful 1x1 charge level indicator that comes with 4 styles to choose from. Battery-friendly as it suspends when phone's screen is off.
NOTE! Battery Widget is a WIDGET for home screen. You need to add it to your home screen as following:
Long tap on an empty space of home screen. In a pop up menu select Widgets, find a widget called 'Battery Widget', press Done and it will appear on your home screen.
Press Home button -> press Menu button -> select Add -> select Widgets -> select 'Battery Widget' -> press Done.
On ICS drag 'Battery Widget' from the Widgets section of All Apps screen to the Home screen.