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NATO connector

Voyager is cordless. The NATO connector plugs directly into your helicopter.


Power button

The power button is ergonomically located at the rear of the unit.  It provides audible and tactile feedback when pressed and is recessed into Voyager’s housing to prevent inadvertent activation.



Three simple LEDs (green, yellow, and red) communicate Voyager’s mission readiness.

Charging circuit

Voyager’s charger can use power from the aircraft’s 28V bus or from our base charger.


Voyager’s high-visibility shell is fire-retardant, water resistant, and shock absorbent.

Modular Battery System (MBS)

Voyager is built around the same Modular Battery System used in our military aircraft batteries.  Advantages of the MBS include high power output, excellent abuse tolerances, safety, longevity, power consistency, zero memory effect, and minimal self-discharge.

Battery Management Unit (BMU)

The battery management unit is a custom-made, electronic safeguard that continuously monitors all critical functions and metrics.  The BMU will activate redundant safeties that automatically disconnect Voyager if a metric is outside acceptable limits.


A New Start

  • Contracted by the U.S. Army’s 160th Special Operations Aviation Regiment (Airborne) to develop a more powerful, longer lasting, main aircraft battery.
  • Our engineers developed the Modular Battery System (MBS) and after extensive testing, the U.S. Army awarded an Air Worthiness Release (AWR) for the 160th Special Operations Aviation Regiment MH-47 Chinook helicopters.
  • The MBS deployed in combat with 160th SOAR (A) in 2010 and has a successful, on-going track-record with the U.S. Army.
  • The same Modular Battery System that powers the 160th SOAR’s Chinooks is available in portable form, in the Voyager.


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Voyager - orange
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Voyager - black
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A revolutionary aviation power source

Voyager is a 28V/20Ah, 15 pound, portable and stowable power source designed to start aircraft engines. Use the Voyager to start a helicopter wherever and whenever. Or, use it whenever the aircraft is on the ground with static rotors to power on-board equipment.


  • Light-weight, portable, stowable, dependable, safe
  • Ten or more turbine starts per charge
  • Abundant auxiliary power for maintenance, avionics, on-board medical equipment, and other accessories
  • Quick recharge in hangar
  • Minimal self-discharge (3% per month)
  • Long life (2000 cycles or more)


  • Start capabilities in any location
  • More auxiliary power to run electronics in any location
  • Longer life of on-board, lead-acid batteries
  • Less stress on turbine, starter, digital engine controls, and avionics
  • Cooler, faster turbine starts
  • Decreased risk of hot-starts
  • Simplified, more efficient maintenance operations


28V / 20Ah 28V / 10Ah
Nominal voltage 26V 26V
Capacity rating 20Ah 10Ah
Continuous current 400A 200A
IPP / IPR (14V and 25oC) 1600A / 1200A 800A / 600A
Cranking power 20kW 16kW
Operating temperatures -20oC to 60oC -20oC to 60oC
Storage temperatures -40oC to 60oC -40oC to 60oC
Water resistant Yes Yes
Length, width, height 18.4" x 6.13" x 4.6" 18.4" x 6.13" x 3.3"
Weight 15 lbs 9 lbs


Avion Power recommends using Voyager during normal flight operations, emergency self-rescue, and maintenance activities.

  • Normal flight operations are improved when pilots use Voyager for routine flights. Voyager's 20kW of cranking power yields faster, cooler turbine starts.  Hot-start risk is decreased, there's less stress on the starter, and lead-acid battery life is extended.  Voyager's 20Ah capacity enables more than 10 turbine starts per charge or it can power a full load of on-board electronics.
  • Emergency self-rescue is no longer an emergency when pilots have a Voyager on-board.  Prepared pilots will retrieve their stowed Voyager, follow their normal start procedures, and take-off in minutes.
  • Maintenance activities that require an auxiliary power source are simplified and more efficient when technicians enjoy the autonomy and freedom of movement afforded by a Voyager.

Please read FAQ, “Why should I use Voyager,” for related information