- VistaHide BatteryGauge - Simple Battery meter, nice colors.
- SBSH iLauncher - Great Launcher, multiple tabs, battery meter on top.
- SPB PocketPlus - Another great Launcher, multiple tabs, battery meter on top.
- Batti - ((Thanks to _Alex_ )FYI, Batti eats batteries.)
- Ariel Battery Meter - Replace your Start Menu picture with a battery meter.
- QuickMenu - Really MUST have. Nice cascading Start Menu, and a nice battery meter.

Enough choice, isn't it?

All above apps are, (or can show) a battery meter on top of the screen.
iPhone 5 - iPhone 4 - Google Nexus 4

- If it jams, force it. If it breaks it probably needed replacing anyway. -