Model 3326 Special

Patent Pending

GPU Starting Unit Model 3326 Special
  • GPU Starting Unit Model 3326 Special
  • GPU Starting Unit Model 3326 Special
  • GPU Starting Unit Model 3326 Special

These StartPac GPUs are designed for ground use to perform repeated engine starting functions. When connected to AC power, the depleted batteries can be charged in four hours with the built-in battery chargers.

This turbine starting unit is designed to provide repeated superior starting power for voltage sensitive turbine engines.

The Model 3326 SpecialGPU is designed for repeated engine starting requirements on voltage sensitive aircraft.


  • 78 Amp Hours at 10 hour rate
  • 26 Volt DC-27.6 Volts at rest
  • Sealed cells non-hazardous
  • Valve regulated high amperage output lead acid
  • 2800 Peak amps

  • 6 built in chargers for faster recharge time
  • Battery recharge time from depletion is approximately 3-4 hours
  • AC Input- 110 Volt or 220 Volts

Load vs. Time (click to view larger)
3328 Special Load vs Time Curve

Voltage Drop vs. Load (click to view larger)
3328 Special Voltage Drop vs Load Curve

The following dimensions apply to each of the 3300s:
38″x21″x20″ Handle Height 48″.

All Start Pac™ products come with a 1-year warranty on workmanship and materials. Batteries are cycle-dependent and therefore are not covered under this warranty.

Please handle this unit in a responsible manner. Start Pac™ is not responsible for damages caused by misuse or neglect.

This GPU is rated at 2800 peak starting amps and is a full 26 Volt battery pack (27.6 volts). Due to the extra starting power provided by the 26 Volt batteries, turbine engines will experience faster, cooler starts and extended turbine life. This model is primarily designed for superior starts on voltage sensitive aircraft. This unit can be configured for 110 Volt or 220 Volt AC input. The 3326 Special weighs 220 lbs./100kilos. This GPUis designed for repeated engine starting only, always avoid discharging the batteries completely as damage to the cells can result, leading to premature battery failure.
Always recharge batteries immediately after use to achieve maximum battery life and optimum performance.
There are approximately thirty 110 volt and thirty 220 volt NEMA plugs in use. Also, customers have various receptaclesat their hangars and MRO facilities and may require specific AC cord length to meet their requirements. Due to these facts, we provide 50 foot AC power cordswith blank wall ends. If you provide the NEMA plug number and specify the AC power cord length you require we will build a cord to be shipped with your unit for a small fee.


For technical assistance, contact Jim Wurth, Chief Engineer/Product Designer/Pilot, directly at (928) 231-4536, toll free at (844) 901-9987 or via email at