P/N: 9017176

Cockpit Self-Test Switch

9017176 Pilot Accessible Button for MD835-1 Emergency Battery Power Supply

The self-test switch is a pilot-accessible button that allows the pilot to verify the emergency battery is healthy and functional without failing the main power. When pressed, it commands the TS835 to briefly disconnect from main power and run on its internal battery alone, confirming the unit will do its job in a real emergency.

Required for installation of TS835 emergency battery power supply P/N MD835-1

The True-Blue Power TS835 emergency power supply battery MD835-1 automatically provides your aircraft with 24.5 VDC power to keep critical or standby equipment running in the event of power failure. Featuring proprietary lithium-ion technology, the TS835 is 60% lighter than competing units and is a direct replacement for the Jet PS835 Series. The unit recharges during normal flight operations and offers up to 4.5 amp-hours of power.

Key Features

• Automatically provides 24.5 VDC power for critical or standby equipment in the event of aircraft power failure
• 4.5 amp-hour lithium-ion battery
• Utilizes proprietary lithium-ion technology, an energy storage solution with superior safety and abuse tolerance compared to metal oxide lithium-ion chemistries
• Maintains full charge by recharging during normal flight operations
• Lightweight, 63% lighter than legacy lead-acid designs
• Direct replacement for L-3 Avionics/JET PS-835 (same rack mount and connector)
• Two-year maintenance schedule
• 8-year (average) life expectancy
• Five-year limited warranty