Tests up to 16Volts Measures up to 6000 AH batteries Data Storage: 500 string locations of 480 test results stored internally Memory card storage Reference free testing using the unique “Reference Developer”est individual lead acid cells (upto 16 Volts) approximately 10-16000 Ah Voltage: 1.5-20.0 Volts DC Test data Storage; 500 string locations of 480 test results stored internally Power Requirements: 9.6V,1600mAH, NiMH internal Swappable battery & Charger Dimension: 11in X 4in X3in Weight: 2.6Lb Approx.