BatteryTruth 1.9.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. BatteryTruth for Mac relates to System Tools. This free software for Mac OS X was originally produced by LuckyIcon Art, LLC. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
BatteryTruth is an application that forecasts how long your battery will last. The tool shows the current battery charge level and the projected run time, even if the laptop is still charging. In addition, it measures the battery discharge statistics while in use and while sleeping.
You may want to check out more software for Mac, such as Low Battery Saver, Battery Status or Wattagio, which might be similar to BatteryTruth.