Simple Battery Monitor is described as 'shows remaining time, charge percentage and battery status in a compact menu bar app'. There are more than 25 alternatives to Simple Battery Monitor for a variety of platforms, including Windows, Mac, Android, iPhone and iPad. The best alternative is Accubattery, which is free. Other great apps like Simple Battery Monitor are BatteryCare (Free), BatteryBar (Freemium), BatteryAlarm 40-80% (Free) and CoconutBattery 3 (Free).
Optimizing battery life just by disabling services that are currently not needed is a simple task with this app. It not only tells you the necessary measures, but also lets you know how much uptime you are gaining with each step you take.
The most accurate battery monitor is now available as a Native iPad and iPhone App (Accura HD and Accura Premium). We have redesigned Accura to provide best possible user experience on the iPad. Monitoring the state of your battery is easy and fun with Accura.
Power Switch - Automatically switch between power plans depending on the power source to derive the maximum backup and system performance. Easily switch between power plans with keyboard shortcuts, get notified and run specific program when battery gets fully charged.
This relatively small application displays a floating semi-transparent battery meter on your screen, and the level of transparency changes as the battery drains. It automatically gets out of the way if you mouse near it.