Battery Indicator Pro v3.1.2
Requirements: all Android versions
Overview: Battery Indicator Pro shows your battery charge level (percent) as an icon in your status bar, with temperature, health, voltage, and time since plugged / unplugged in the notification area. Now has an alarm feature.

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Features:
• Fully configurable green, amber, red, and black icons
• Estimated charge / discharge time left
• Battery logging. You can log the battery state (charge, status, voltage, temperature) and browse the logs on the phone or export to CSV.
• Manually or automatically disable / reenable device lock screen / lockscreen / keyguard
• Alarms (full, charge above X, charge below X, temperature above X, or health failure)
• Themes for main window
• Lots of configurability; most features are optional
• Very lightweight (please email me if you think otherwise, and I'll help you figure out what's wrong — I promise this app will not drain your battery.)
• Open source

Recent changes:
3.1.2
Workaround for a bug in CyanogenMod (should fix FC for CM users, but you need to enable "Summaries Use Formatter" setting first.)

3.1.1
Bugfix

3.1.0
Alarms and updated translations

More Info:
Code:
http://www.appbrain.com/app/battery-indicator-pro/com.darshancomputing.BatteryIndicatorPro
Download Instructions:
http://www.filesonic.com/file/45371461

Mirror:
http://www.duckload.com/download/1598524/b312.zip