The B500IR consists of Techno Tools Corp.'s patented battery, charging/starting system tester, No. B500, and the new Infrared to USB Adapter, No. B501. The B500 tests all 6V or 12V individual, parallel or series batteries. The tester displays the battery condition in percent/capacity, CCA, charge state, and good/replacement status. It tests 6/12/24/36V starter/charging systems, starter draw, alternator/regulator output including diode ripple.