Emergency Battery Power Supply

Part Number
Model Number
Mid-Continent Instruments and Avionics
Technical Description
24.5 VDC, 4.5 Amp, Lithium-ion, 5 VDC output, TSO
Marketing Action Note
Replacement for PS855-XX series
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Product Description

Keep your critical and standby equipment running in the event of a power failure with the TS835 Emergency Power Supply from True Blue Power. The MD835-5 automatically provides 4.5 amp-hours of 24.5 VDC power for your most essential systems and provides 3.0 – 5.5 VDC adjustable lighting output. This Emergency Power Supply is also a direct replacement for the Jet PS835 Series.

Benefits and Specifications
  • Automatically provides 24.5 VDC power for critical or standby equipment in the event of aircraft power failure
  • 4.5 amp-hour NanoPhosphate® lithium-ion battery
  • Includes an integrated 5V output
  • Utilizes advanced NanoPhosphate® 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-855 (same rack mount and connector)
  • Two-year maintenance schedule
  • 8-year (average) life expectancy
  • Designed and built in Wichita, Kansas USA
  • Five-year limited warranty

4.5 amp-hour battery nominal

Input Voltage
24 – 32 VDC, 15 amps max

Output Power
24.5 VDC nominal, 20 amps max
3.0 – 5.5 VDC adjustable lighting output, 5.0 amps max

4.8 lbs — 8 pounds lighter than legacy lead-acid designs

3.1” H x 12.7” L x 2.4” W (approximate)

Life Expectancy
8 years (average)

Factory replaceable fuse

Mating Connector

Rack Mount Installation
1/4 ATR rack

Optional Vent Kit
MCI P/N 9017983

Remote Test Switch
Remote-mounted self-test switch required
MCI P/N 9017176 or equivalent

Anodized aluminum, blue

FAA TSO C179a certified
EASA ETSO C179a certified
ANAC TSO C179a certified
Part 23 AML STC certified
RTCA/DO-160F qualified
RTCA/DO-311 qualified

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