130-Amp Heavy-Duty Battery Load Tester Applying an industry-leading 130-amp load this ergonomically designed heavy-duty battery tester provides accurate reliable test results in just 10 seconds. It includes uniquely designed clamps for a positive grip on top- and side-post batteries and an extra-large easy-to-read display. Features and Benefits 130-amp load capacity for accurate results. 016 volt range. Uniquely designed clamps for both top- and side-post batteries. Extra-large display with zero adjust. Works on both 6V and 12V batteries. Ergonomic handle design. Side tabs for on-tool clamp storage. Back brackets for tool storage on wall or toolbox. No. 3181 130 amp heavy-duty battery load tester.