130 amp load capacity for accurate results. 0-16 volt range. Uniquely designed clamps for both top and side post batteries. Extra large display with zero adjust. Works on both 6 and 12 volt batteries Applying an industry-leading 130 amp load, this ergonomically designed, heavy duty battery tester provides accurate, reliable test results in just 10 seconds. Side tabs for on-tool clamp storage. Back brackets for tool storage on wall or toolbox.