This handheld BVA-300 40-Amp Tester/Analyzer is designed to check 6-Volt and 12-Volt batteries quickly and accurately using their patented ''pulsed load with CCA measurement technology''. The BVA-300 is menu driven for easy use and can also tell you vital information about your electrical system like: starter draw by comparing cranking voltage to loaded voltage and diagnoses alternator condition including output without the need for accessory loads while compensating for battery temperature. It includes an accurate DC and AC ripple voltmeter. This Tester/Analyzer stores the last 50 test results in memory for easy review and printing.