Test Battery 6 and 12 V 6 and 12 volt jump starter Alternator 6 and 12 V Waveform This function, directly accessible via a dedicated button, is a graphical analysis of the battery voltage during startup. Provides an excellent overview of battery health Compatible with 3 types of 7-240Ah lead-acid battery · VRLA / GEL / AGM FLAT Plate/AGM SPIRAL sealed batteries · Standard liquid batteries · START / STOP (EFB/AGM) batteries ULTRA-PRECIS · Automatic outdoor temperature compensation. · Dynamic resistance measurement minimizes battery discharge and shows a reliable result not distorted by: - surface load - stray consumptions (lights, indicator lights, etc.) - a contact defect (oxidation terminals/loose terminals) INTUITIVE AND SAFE - 2.4 inch color screen. - Battery voltage control on graph. - Ability to download test results and save them by computer. - Protection against reverse polarity.