The 1876 provides variable load carbon pile testing capability for 6, 12 or 24 Volt batteries to 2000 CCA. It allows quick, conclusive assessment of battery capacity as well as at-a-glace diagnosis of alternator output and starting system capacity. The unit features voltage selection to dial in the battery voltage for easy reading of the test results. With dual gauges, it is easy to manage the testing process and observe the results. Load control is smooth and precise.