Start Power Rb85A-28 Power Unit 1700 Amps / 28 Volts

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Part# 11-15546
MFR Model# ARB85A28


The Red Box hand portable packs are some of the most powerful Hand Portable Packs available worldwide. Red Box uses the latest in military aerospace technology to achieve a very high power to weight ratio. These power packs are designed for starting of piston, turboprop or turbine aircraft and helicopters in the field or in remote locations and Red Box units may be carried safely on board all aircraft. The power packs are “all weather” units and being modular, can be used in single or dual format. They can be used or stored in any orientation, even inverted. Cells used are cleared as non-hazardous cargo for carriage in the aircraft. They are able to operate in extremes of temperature and have excellent standby characteristics. They are maintenance free and do not require cycling. They can be re-celled “on condition” at any Red Box service center in the world and are designed to give years of repeated service. In addition to aviation, these highly portable units can be used with Armored Fighting vehicles and Military equipment. They can be recharged from the automatic charging system, which is supplied in the package, or from any vehicle using a suitable interface.

Volts DC: 28
Peak Amps: 1700
Maximum S/C Amps: 2600
Battery Typ: Lead Acid
Weight: 33 kg
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


  • Totally weather protected.
  • Air transportable, ‘Non Hazardous‘
  • Maintenance free.
  • Tough and compact.
  • No memory effect.
  • Works in any orientation.
  • High charge retention.
  • Long shelf life.
  • Fast recharge.
  • External charger for prolonged unit life.
  • No cycling.
  • Leak proof.
  • Cells replaceable on condition.
  • Heavy duty engine starting of turbo prop, turbine, aircraft and helicopters.
  • Starts Main Battle Tanks.
  • Starts Armoured Fighting Vehicles.
  • Lightweight portable start power at remote locations.


  • Max amps: 1700 (Nom. short circuit current) / 2600 (Max. short circuit current)
  • Capacity: 38 Amp Hrs @ 10hr rate
  • Max voltage: 30v DC
  • Size: L550 W105 H380 mm
  • Weight: 33 kg
  • Operating Temp: -40°C – + 60°C
  • Case: Stainless Steel
  • Voltage Indication: Digital to IP65
  • Auxiliary Protection: Circuit breaker 40A
  • Auxiliary Input: 29V DC
  • Aircraft Cable: 2 m heavy duty
  • Charger: 8 Amp universal AC input charger. Charging time less than 2 hours from 50%
  • Protection: Reverse polarity warning

In The Box

  • Charger
  • Output Cable



Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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