Emergency Battery Power Supply

Part Number
Model Number
Mid-Continent Instruments and Avionics
Technical Description
24.5 VDC, 4.5 Amp, Lithium-ion, TSO
Marketing Action Note
Replacement for PS835-XX series
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Product Description

The True Blue Power TS835 Emergency Power Supply automatically provides your aircraft with 24.5 VDC power to keep critical or standby equipment running in the event of power failure. Featuring advanced NanoPhosphate® 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.

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
  • 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-835 (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

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 year (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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