HIGH TECH. HIGH PRAISE. The MD835 is the industry’s first lithium emergency power supply. FAA TSO approved and AML STC certified. Product Comparison Voltage Output MD835 PS-835 24.5 VDC 24.0 VDC Capacity (1c rate) 4.5 amp-hours 4.2 amp-hours Weight 4.8 lb 13.0 lb Maintenance 2 years 1 year Life Expectancy 10 years 3 years Kansas 800.821.1212 California 800.345.7599 www.truebluepowerusa.com avionics news • february 2012 33http://www.truebluepowerusa.com