This tool detects and tests lead-acid batteries, assessing CCA and health. It calculates remaining battery life based on temperature and CCA data. Users can also test cranking and charging systems, with all results shareable and printable.
1.6.4
March 30, 2026
1. New support for iOS 26 has been added.
Battery Master 12V is designed specifically for testing lead-acid batteries. It can intelligently assess their CCA and overall health condition.
It calculates the available use life of the battery by considering both temperature data and the battery's CCA (Cold Cranking Amps) data sheet.
Yes, in addition to battery health, users can alternatively test the vehicle's cranking system and charging system for comprehensive diagnostics.
All saved history test results from Battery Master 12V can be easily shared with others or printed out for your records.
Yes, the app requires installation on a battery to perform its detection and testing functions. It automatically obtains test results when your phone is close to the device.
Battery Master 12V is available for iPhone and iPod devices. It has an age rating of 4+.
The latest version of Battery Master 12V is 1.6.4, which was last updated on March 30, 2026. This indicates a recent update.
Battery Master 12V has a user rating of 3.4 stars based on 5 ratings. This suggests mixed user experiences.
