White Lightning 28-Volt SmartGPU - 114 amp - S28114

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Part# 11-20346
MFR Model# S28114


The first general aviation GPU to offer Bluetooth and Wi-Fi connectivity, the White Lightning SmartGPU™ offers advanced features that cater to convenience, safety, and performance requirements of contemporary aircraft.

Audio Authority, a U.S.-based leader in electronics design and manufacturing since 1976, announces the launch of its newest evolution of the White Lightning brand of ground power units – the SmartGPU™. With feature sets designed for the needs of a wide range of general aviation aircraft, from piston-powered to mid-size business jets, the SmartGPU™ sets a new standard in power, control, safety, and convenience.

The S28114 includes 28V SmartGPU up to 114 amps max continuous, with BT & Wi-Fi mobile device connectivity, graphical display, volt/amp meters. Supplied with a 10-ft 115V AC line cord and a 230V AC pigtail and 50’ extension cord with L6-20 locking plug. 8’ detachable aircraft cable with 3-pin AN2551 plug.
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  • Intelligent Connectivity: Utilizing Bluetooth and Wi-Fi technology, operators can remotely monitor and control the SmartGPU™ using an iOS and Android-compatible mobile app, providing unprecedented flexibility and convenience.
  • Advanced Metering: Equipped with a 4” TFT display, the SmartGPU™ provides real-time digital output metering and operational information, empowering users with precise data at their fingertips.
  • Enhanced Power: With models ranging from 54A to 114A at 28 volts, the SmartGPU™ delivers robust and reliable power, catering to a wide range of aircraft, from piston-powered planes to mid-sized business jets.
  • Future-Ready Design: Built with scalability and longevity in mind, the SmartGPU™ is designed to adapt to future technological advancements, ensuring continued relevance and performance for years to come.


  • Universal, worldwide AC input compatibility with provided cables
  • Graphical, color display with large digital volt/amp output meters
  • Rugged, heavy-gauge aircraft cable with AN2551 external power plug
  • Multiple aircraft/operator profiles with event logging
  • USB ports for data downloads, firmware upgrades, and device charging
  • Programmable auto-shutdown timer to prevent inadvertent unattended GPU operation



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.