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Model #: TS835

Emergency Power Supply

24.5 VDC, 4.5 Amp, Lithium-ion, 5 VDC output, TSO

Manufactured by Mid-Continent Instruments and Avionics for True Blue Power

Replacement for PS855-XX series

Customer Rating
Availability List Price
New Outright
No core return required
Quantity available: In Stock
  • List Price: $6,000.00
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Overhaul Exchange
Exact part number core return required
Quantity available: Typically 3-5 days
  • List Price: $4,133.00
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  • 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
  • 10-year life expectancy
  • Designed and built in Wichita, Kansas USA
  • Two-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
10 years

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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