Auto Meter SB-300 Intelligent Handheld Battery Tester Tests flooded, deep cycle, and AGM batteries with CCA range of 100-1600 - also detects discharged batteries, bad cells, and has built in reverse polarity protection. This tester applies a true 40 amp load to the battery in order to simulate real world operating conditions consistent with BCI (Battery Council International) testing standards. Battery test results include: Measured true CCA, voltage and percent of charge, and the battery's state of health (good, near end of life, or bad). Automatically stores the last 100 tests in memory. 30" - 16 gauge leads with professional grade clamps that are easily field serviceable.