12V Automatic Battery Load and System Tester

True battery resistance tester that applies a resistance load that duplicates starting load conditions.Resistance load is auto-timed for increased accuracy.Unique test and hold feature locks the under load voltage reading for easy comparison to the pass/fail test matrix.Maximum starting resistance load: up to 400 CCA, 0-15V.Can also be used to test starter draw and charging system voltage using the open-circuit voltage meter function with the high-low-normal voltage matrix on the tester face.Includes safety reverse polarity indication.Built-in wall hanger