Airplane and heli modelers will enjoy the expanded capability the new MKII offers; it measures 4.8V AND 6.0V receiver batteries, as well as 9.6V Tx packs. The more detailed meter shows 4-, 5- and 8-cell scales, with dual descriptors for each, as well as red and green zones for each to show safe/unsafe voltage levels. A mirrored area on the meter ensures the proper needle viewing angle The MKII unit is 25% smaller than the original and lighter as well so it takes up less space in a field box or on a workbench Simulates a very realistic 225-275mAh load for testing batteries