We recommend checking the downloaded files with any free antivirus. Battorox for Mac is included in System Tools. This free Mac app is a product of Omid Pajuhideh.
From the developer:
Battorox monitors easy and simple the Battery information in your laptop including its capacity,
current capacity, current capacity in percent, cycle count, voltage, amps and the flags.
It is a 50KB program which is specially simply developed. The program refreshes itself each 5 seconds.
There are some Mac systems on which the software does not work, please do not be angry.
Note: OS X 10.3.8 and later The Amperage info is disabled for now.